4 June 2026

Added unique file IDs. File links are now independent of file paths and remain unchanged when files are moved or renamed.

15 January 2026

	New dashboard theme.
	New top menu theme.

4 July 2025

• The All Files search includes all files from your Shared Enterprise Folder.
• Breadcrumbs in the File Manager help you easily navigate through nested folders.

20 March 2025

• Microsoft Entra ID (formerly Azure Active Directory) integration for Single Sign-On (SSO). Only available with a SkyCiv Business Account. Learn more here.

20 February 2025

• Translations in the software now supports additional languages: Portuguese, Chinese, Vietnamese, Dutch, Hindi, Arabic, Thai, and Serbian. You can change this via Account Settings > Software Settings > Software Language.

02 October 2024

• Translations in the software for Spanish, French, German and Italian. You can change this via Account Settings > Software Settings > Software Language.

27 August 2024

• Fixed issue with some SkyCiv PDF documents not working in Bluebeam construction software. If you had issues with this in the past please try again.

v3.3.2 - 18 August 2025

• The SkyCiv Beam Quick Start Wizard now has imporved options for validation.
• BMD Reverse Sign Convention has been updated to match SkyCiv Structural 3D. Reversing the Sign Convention will flip the graph but not reverse the actual value of the results.

v3.3.1 - 12 June 2025

• Resolved issues with hand calculations for some load combinations.
• Added IDs to load combinations to allow for improved identification in results.

v3.3.0 - 02 June 2025

• SkyCiv Beam Quick Start Wizard to help you quickly build beams with minimal effort.
• Each result graph now has a distinct color.
• Ability to Show Supports supports on the Reactions at Supports Diagram.
• The Angle of Rotation has been renamed to Angle of Twist. Furthermore, only beams with a cross-section from the section builder can be solved if an Angle of Twist greater than 0 exists.
• Transposed the deflection results table for simple beams to improve readability.
• Ability to turn off the grid for the beam but not the snapping for dragging supports/loads.
• 3D Renderer now removes the deflected shape when switching back to results that should not be deflected.

v3.2.6 - 19 February 2025

• Fixed some issues with the calculation of b and d variables of the moment distribution method hand calculations for non-uniform distributed loads. Other formulae and final hand calculations did not have any issues.

v3.2.5 - 31 July 2024

• Improvements to Optimizer:
1. New statistic showing summary (% and kg/lbs of steel) saved from a Designer run.
2. The settings window improved, with clearer options for Analysis Interval as a dropdown rather than a number.
3. More info tips and clearer labels for a better User Experience.

v3.2.4 - 14 May 2024

• Open your beam models in SkyCiv Detailed Shell FEA. Access via "Open in FEA" in the top menu.
• Import and Export JSON files for offline storage (Note: This feature requires a plan with unlimited storage).
• Added the ability to customize what Project Info is added to the Beam Analysis Report.
• The section and material selected are now reported in the right-side elements list.

v3.2.3 - 6 December 2023

• Report on all load combinations. Access via "Results" -> "Load Combinations Report".
• Access more integrated design standards including Aluminum and Scaffolding with the "Other Design" option.
• The analysis report now default includes an Input Summary page detailing all the inputs found in the beam model.

v3.2.2 - 1 March 2023

• Change beam results colors for both UI and reporting by right clicking on graph.
• Right click shortcut menu for beam model.
• Added ability to reflect beam model (Access via model right click menu).
• Added delete button shortcut to remove elements when modeling.
• Improved CSV input functionality to extend support to loads.

v3.2.1 - 19 December 2022

• Automatically reconfigure the beam elements when shortening or lengthening the beam if all elements are at the endpoints.
• Load combination criteria are now automatically assigned when importing for design code.
• Added "Reset Design Data" options to wood, cold-formed, and concrete design modules.

v3.2 - 10 August 2022

• Results charts have had a major upgrade for smoother curves and annotations to help with the identification of related equations.
• Hand Calculations are now available for load combination results.
• Simplified single-page analysis reports.
• Strength and serviceability criteria added to load combination inputs.
• View your beam in the powerful SkyCiv 3D Renderer in the modeling stage.
• Improved settings options and ability to save settings as default for your current browser.
• Added setting to remove deflection results from other rounding settings.
• You can now save the design factors used in integrated steel member design with your model data.
• The points of interest table now works with all results diagrams.
• Navigate between different results sections using the left and right arrow keys.
• View all optimizer runs and select any section from the optimized section list to add to your beam.

v3.1.3 - 23 June 2022

• Improved accuracy of bending stress, shear stress and combined stress for members with unsymmetric sections and non-template sections.

v3.1.2 - 07 February 2022

• IS (Indian) Load Combinations.
• Improvements to shear stress calculations.
• If a section was added via section builder it can now be removed so that E and I can be entered manually.

v3.1.1 - 22 November 2021

• NEW: Add option for load combination summary table to analysis report.
• NEW: 3D renderer has been upgraded to use the new SkyCiv renderer with extra results options added.
• Improved support for display of composite sections in section properties and result summaries.
• Increased evaluation point limit to allow for smoother graphs.

v3.1.0 - 06 September 2021

• NEW: Ability to rotate member/beam about its own axis.
• NEW: Add multiple supports and hinges with comma-separated values in the position field.
• NEW: Convert Beam Data to equivalent values in new units by checking on Settings > Convert Beam Data.
• NEW: Add and save notes to beam elements for reference in the future.
• NEW: Design Ratio Summary highlights the worst result ratio for each design result in integrated steel member design.
• NEW: Project Report Manager saves your latest project reports to your cloud file storage for easy future access. See File > Report Manager.
• Hand Calculations can be accessed for suitable load cases with quick links available in Hand Calculation dropdowns.
• Tooltips have been added to the deflection table and ratios to improve understanding of how this is calculated.
• Various bug fixes and quality improvements.

v3.0.1 - 06 July 2021

• NEW: Results verification warnings/errors confirm your FEA Results match SkyCiv Hand Calculations.
• NEW: Added the Ability to Save All Unit Settings locally to browser storage when adding new models.
• NEW: Added Only Solve User Defined Load Combinations option to settings.
• Improved accuracy and display of deflection table and fixed issues involved with cantilever beams.
• Resolved issues associated with Load Combinations.
• Fixed scaling of loads at the end of the beam and improved scaling of supports on smaller screens.
• Improved reliability of PDF Analysis Report Downloads.
• Various UI and Bug Fixes to improve the overall user experience.

v3.0.0 - 23 February 2021

• NEW: Full-page user interface with larger modeling space and graph results.
• NEW: Load Combinations can now be added to your beam model.
• NEW: Spring Supports are now available.
• NEW: Improved Professional Reporting.
• NEW: Drag Functionality. Easily re-position by clicking and dragging loads and supports.
• NEW: Integrated Design and Optimizer. Quickly run design checks from the results page.
• NEW: Open in S3D button which transfers your beam model to S3D seamlessly for advanced analysis.
• NEW: Points of Interest Table. Define Points of Interest across your beam.
• NEW: Single-click Copy to Clipboard option for diagram results.
• NEW: Export Results to CSV.
• NEW: Full SkyCiv 3D Renderer now available.
• SkyCiv Beam v2 (i.e. Classic SkyCiv Beam) can still be accessed here.

v2.8.0 - 15 November 2020

• NEW: Deflection hand calculations.

v2.7.2 - 23 April 2020

• Fixed issue with custom materials being used not producing any results sometimes (loading spinner stuck).
• Fixed annoyance issue with section builder right-menu immediately closing after opening the section builder.

v2.7.1 - 15 November 2019

• NEW: Added deflection components (Y, Z, Sum) to 3D renderer results.
• Improved 3D renderer deformed shape when section has a twist/alpha value (i.e. asymmetric).

v2.7.0 - 06 November 2019

• NEW: Moment Distribution Method hand calculations available for statically indeterminate reaction calculations.
• NEW: Deflection Span values now calculated (e.g. L/250) along the member. Set the deflection limit in Settings from the top menu.
• NEW: Stresses that exceed material strength will now be highlighted red.

v2.6.1 - 08 October 2019

• NEW: Ability to add multiple evenly-spaced supports and point loads (based on quantity and interval).

v2.6.0 - 17 September 2019

• NEW: Add self-weight option when the beam has a section shape assigned from the builder.

31 July 2019

• NEW: Add materials from the material database through the section builder.

22 March 2019

• NEW: Added Canadian code (CSA A23.3-14) for RC Design.

v2.5.1 - 13 February 2019

• NEW: Added helpful buttons to input menus that fill location input fields more easily.

v2.5.0 - 13 December 2018

• NEW: A solution can now be generated without adding supports provided that the beam is in static equilibrium.

v2.4.2 - 24 October 2018

• NEW: Integrated NDS® 2018 ASD/LRFD Member Design code into the software.
• NEW: Math expressions can now be entered into the input fields.
• NEW: Upon entering on a field, it will auto-highlight the entire text for easier data entry.
• NEW: By default, a distributed load's length will be the entire beam span as this will save data entry for the user when this is the case.
• NEW: The data of the integrated member design modules will now be saved along with the beam model file.

v2.4.1 - 24 September 2018

• Added missing E and I values to PDF report when custom values used for E and I.

v2.4.0 - 12 June 2018

• NEW: RC design module has been integrated. You can specify a load type for each load for the purpose of the design module.
• NEW: Ability to add descriptions/notes to supports and loads for reference.

v2.3.1 - 11 April 2018

• Improvements to the way loads are drawn on the model and free body diagram. Fixed some scaling issues.
• Fixed issue with the aspect ratio of the title page image of the beam model on the PDF Report.

v2.3.0 - February 2018

• NEW: Moved software to a new platform (platform.skyciv.com). Appearance of software UI may be slightly changed.

v2.2.1 - 19 December 2017

• NEW: SkyCiv Canadian Steel (CSA S16-14) Design Code integrated into SkyCiv Beam.
• Fixed a messaging alert issue where a beam that could not be solved kept saying the server was down.
• Fixed a bug where extremely small spanning distributed loads would not solve.

v2.2.0 - 5 December 2017

• NEW: Deflection of completely asymmetric sections (like angles) can now be accurately calculated as the deflection in both axes (y and z) are now found. Use the dropdown to select vertical or horizontal deflection.
• NEW: Added new sections to the database library of standard shapes.
• Fixed an issue with 3D renderer showing the reversed section shape about the y-axis.

v2.1.1 - 1 November 2017

• NEW: SkyCiv Australian Steel (AS4100) Design Code integrated into SkyCiv Beam.

v2.1.0 - 11 September 2017

• NEW: SkyCiv Eurocode 3 Design Code integrated into SkyCiv Beam.

v2.1.0 - 12 August 2017

• NEW: SkyCiv Design (AISC 360-10 and AISC 360-16) codes have been integrated with SkyCiv Beam.
• NEW: Solve button and UI layout has changed to accommodate the design codes.
• NEW: Material Strength data can now be added/edited within the section builder for the purpose of design.
• Fixed bugs related to PDF report. Also slightly improved the PDF report.

v2.0.5 - 6 July 2017

• NEW: Materials Library added to assist with Modulus of Elasticity Values when not using the Section Builder.
• NEW: Shape Library added so it's easier to enter Moment of Inertia without using the Section Builder.
• NEW: Deflection can now be calculated without a paid account (i.e. for FREE)

v2.0.3 - 19 February 2017

• NEW: Hand Calculations can now be added to the PDF Report.
• A few fixes to the hand calculations and a slightly neater layout. The hand calculations are also less 'glitchy' and 'flashy' and appear on screen only once they are fully ready.

v2.0.2 - 14 February 2017

• Fixed an issue with the rounding of certain results. The software should now report results up to 5 significant figures whilst dropping trailing zeros to make the output easier on the eyes.

v2.0.1 - 19 January 2017

• NEW: Loads and supports can now be clicked to edit them when building the beam.
• NEW: Fixed supports can now be added anywhere along the beam (not just the ends).
• NEW: Hinges can now be added at pinned and roller supports.

v2.0.0 - 07 December 2016

• NEW: Hand Calculations Wizard. More detailed solutions reactions, SFD and BMD fully worked solutions than before.
• NEW: Section Builder. The new SkyCiv Section Builder (SB) has been integrated into SkyCiv Beam.
• Improved adding a 'custom' section without specifying a shape. It is now much easier to enter a custom material (E) and moment of inertia (I) without using the section builder.

v1.3.3 - 26 July 2016

• NEW: PDF Report.
• Fixed bug related to unknown sections when saving files.
• Further Improvements to Retrieval of Section Info on Solution Page.

v1.3.2 - 14 July 2016

• Fixed bugs related to the new v1.3.0.
• Improved Retrieval of Section Info on Solution Page.

v1.3.0 - 06 July 2016

• NEW: Cleaner Output, Better Layout and Improved Appearance.
• NEW: Improved File Management including Thumbnails.
• Faster Solve and Loading Time (One Page).
• Improved Overall Reporting.
• Improved 3D Renderer Controls.

v1.2.4 - 16 February 2016

• NEW: "Settings" can be changed on the solution page which changes various graphing/diagram settings for easier readability.

v1.2.3 - 17 December 2015

• NEW: Files can now be saved with "Job Details" attached.
• NEW: File Manager for saving and opening files.

v1.2.1 - 28 October 2015

• NEW: Section Database. Section Builder now can import standard sections from America, Australia, Europe and Britain.
• NEW: Channel Sections.
• NEW: Ability to save sections.
• Height of section is now displayed in the section summary on the results page.

v1.2.0 - 28 September 2015

• NEW: Full working solution added for statically determinate problems (great feature for students).
• NEW: Full working solution for SFD and BMD by method of sections/cuts.
• NEW: Inclined point loads can now be added and solved.
• NEW: The free body diagram on the solution page now has the ability to show equivalent loads of distributed loads and inclined point loads.

01 September 2015

• Fixed issues with "Save to Image" function.

v1.1.1 - 15 July 2015

• NEW: 3D Renderer which displays results with color contours.
• Maximum limit of loads/supports increased from 10 to 20.
• NEW: Stress values displayed on the section.
• NEW: Rotational displacement results now available!
• NEW: Section dimensions now get saved with your file.

v1.1.0 - 28 May 2015

• NEW: Dynamic section builder available.

v7.2.14 - 09 October 2026

Fixed issue with poor mid-span displacement shapes on released members that used sections with reduction factors.

Improvements and fixes to the STAAD importer: Improved handling of ONEWAY load specifications which import as area loads. Improved handling of MEMBERLOAD and PRESSURE. More user-side logging when handling errors. Consistent unit conversion across all data. Case-insensitive command parsing - most STAAD files use uppercase for commands by convention but any commands that were not in uppercase were silently dropped. This is now fixed. Added support for PRISMATIC (custom) sections. Member-end spring releases (MPY/MPZ) now carry their actual stiffness value through. Response spectrum (SPECTRUM) load cases — previously the loads defining a spectrum case's mass data were wrongly imported as ordinary static loads. Now the whole case is correctly skipped (with a clear log message). A repeated SUPPORTS block (from a STAAD "CHANGE"/re-analysis workflow) no longer silently wipes out the model's real supports. More warnings when data cannot be converted.

v7.2.13 - 26 August 2026

	Added Pen Tool to the 3D renderer, accessible via the PEN icon in the renderer's bottom toolbar.
	Added the CTRL + Mouse Drag action to the 3D renderer for selecting multiple items (similar to the main renderer).
	Added Match Properties function for members, supports, and plates which copies the properties from one element to another. This is available from the right-click menu and left menu.
	Double-clicking a member will now select other connected in-line members (main renderer only). This can also be achieved via Right-click > Select In-Line Members.
	Double-clicking a plate will now select all elements in the plane of the plate (main renderer only). This can also be achieved via Right-click > Select by Plane.
	Using TAB when hovering over multiple items will now toggle the selection of those items (main renderer only).
	Added Visibility Settings > Axis Helpers > Nodal Global Axes which will show a global axis helper at each node and support.
	Improved the styling of the drag-selection box in the main renderer (now matches the new 3D renderer styling).
	Added settings to ignore load groups/cases for the main envelopes within the custom envelopes UI.
	Added a setting to control the load combinations used for the building slenderness check (global governing displacement) in the Results Summary. This setting is available under Settings > Solver > Results Summary > LCs to Use for the Building Slenderness Check and allows the check to be performed using only serviceability load combinations, which is now the default.
	Plate openings in the main renderer are now proper holes in the graphics rather than lightly-colored patches.
	3D renderer will now zoom at the location of the mouse rather than the center of the screen.
	The solver will now throw warnings regarding duplicate load combinations.
	Fixed an issue where the Pen Tool did not detect gridline intersections accurately on models using a vertical Z-axis.

v7.2.12 - 10 August 2026

	Cantilevered portions of loads can now be considered in One Way Area Loads.
	Cantilever Extensions can now be added via the left menu in One Way Area Loads.
	Reactions will now be colored in red, green, blue to match the global 3D axis colors. This option can be toggled inside the reactions settings (red Reactions button) > Colored Arrows. When not enabled, the reaction arrows will be drawn in black as it was done before this release.
	Fixed a bug in the One-Way Area Loads where slightly out-of-plane area loads with local direction loading would show high variance.
	Fixed a bug in the One-Way Area Loads that would discard input nodes if they were not connected to any members.
	Improved touch controls in the 3D renderer by allow two-touch to pan (previously three-touch was required) and the two-touch zoom is now less sensitive.
	Synced the members and plates visibility between the main renderer and 3D renderer.
	Added line supports to 3D renderer.
	A side notification is now used after plate meshing to indicate how many plates were meshed successfully and unsuccessfully.
	The plate mesher will now proceed to mesh with a warning when node or member IDs are included that are not actually part of the plates to be meshed. All node and member IDs that were skipped will be mentioned for reference. Previously, the mesher would not proceed and only one of the element IDs that was problematic would be mentioned in the alert.
	Various minor UI bug fixes.

v7.2.11 - 23 July 2026

	Overhauled the Sections > Add from Database UI and workflow: Added ability to add up to 15 sections at once. Previously, only one section could be added at a time. Added ability to add a new material to be assigned to these sections. Previously, only an existing material could be assigned. Improved filtered sections/material searching based on selected dropdowns. Added database/custom material badges and note for legacy material properties. Added ability to preview material properties before assignment.
	Added bulk material assignment for multiple sections which can be accessed via Sections > Datasheet > Bulk Assign Materials.
	Improved the following S3D action buttons related to sections and materials for better visibility and accessibility: Added new button in Sections menu: Sections > Add from Database Added new button in Materials menu: Materials > Add Material from Database Added new button above Members > Section ID to add a section from the database and assign it to the current member. Added new button above Sections > Material ID to add a material from the database and assign it to the current section.
	Improved the Add Relative Member function: More intuitive input fields. Improved graphical preview. Option to select a Section ID to assign to the created members.
	Added an Add Relative Node function to the right-click menu and right-side operations toolbox. This function works similarly to the Add Relative Member function.
	Added an Add Node Within Plate function to the right-click menu. This function allows you to add nodes inside a plate relative to a plate node.
	Improved the Plate Openings interface: Double-click nodes in the graphics to start drawing plate openings. Previously, you had to manually enter the node IDs for the opening. Linked it to the new Add Node Within Plate function, making it easier to add nodes inside the plate for use in openings.
	Improved the Sum Loads function: It now considers all load types (previously only distributed loads were considered). It now provides a breakdown of positive, negative and total load in global X, Y and Z directions (previously only the total amount was provided for X, Y and Z). It is now available in the right-click menu and toolbox when at least one load is selected.
	When deleting elements, you can now retain nodes connected to other elements. This behaviour can be controlled using the Keep nodes connected to unselected elements checkbox in the delete confirmation popup, or at any time via Settings > Modelling > Keep nodes connected to unselected elements when deleting elements.
	Added a switch to toggle the visibility of near-node member force labels in the graphics.
	Changed the 3D axis system of the 3D renderer to match the main renderer.

v7.2.10 - 02 July 2026

	Now displaying Total Force and Total Area of the selected area load in the left menu.
	Now ignoring meshed nodes from the area load calculations which will make the calculations more robust when applied over plates.
	Fixed a bug where distributed loads attributed to deleted members could persist and break other area loads.

22 June 2026

	Re-enabled the RVT + IFC Import and RVT Export functions. These were temporarily disabled for maintenance on 21 May 2026.
	Re-introduced the DWG Import function which now works through CloudCAD. Similarly, a PDF import will go through CloudCAD.

v7.2.9 - 16 June 2026

	Added integration with new SkyCiv CloudCAD. Button available in top right bar.
	Improved input validation of area loads: Left-menu now shows the reason that an area load is invalid after it's applied. Datasheet will no longer submit an invalid area load. It is now consistent with how the inoput validation works via the left-menu.
	Various other improvements and fixes with area loads: Fixed an issue with variance rounding down to 0% when forces were too small. Removed the variance checks for area loads with errors. Added dynamic tolerance updating to help with models with many nodes in close proximity. Fixed an edge case where loads on exterior members could be doubled when interior members were considered. Resolved a bug where meshed nodes would cause tolerance issues.
	Mouse tools options container is now less cluttered as irrelevant options have been hidden depending on the current mouse tool selected.
	Pen tool and plate/area-load creation mouse tool will now work simultaneously. Previously, the pen tool was completely disabled when the plates or area loads left menu was open.
	Improved hover effect of distributed loads, area loads and pressures.

v7.2.8 - 21 May 2026

	Overhauled the interface for viewing messages and warnings from the solver: The messages are now organized into 4 categories: Severe Warnings, Moderate Warnings, Minor Warnings and Information. Output > Solver Messages & Warnings (previously Output > Solution Info) can be used to view all messages and warnings where you can filter the warnings by severity and load combination. If the results contain warnings, a button to view the warnings will be shown in the progress popup directly after the solve has finished. When viewing a load combination's results, a message will show at the top of the screen if there's any warnings. Clicking this message will open the warnings into a floating container. The messages and warnings can be exported to PDF.
	Added IFC importer via File > Import > IFC. Upload your IFC file and choose which IFC elements to import.
	Improved the variance check for FE Plate Area Loads.
	Improved the clickability of items when there's text labels around them in the main graphics.
	The new Settings > View > Hide labels when they clash setting introduced in v7.2.3 is now persistent across all models rather always being on by default when loading a model.
	Adjusted the DXF export function so that ETABS could properly import the DXF files exported from S3D.
	Improved microstran ARC importer.
	Temporarily disabled RVT + IFC Import and RVT Export while it undergoes maintenance. It will return by mid-June.
	Deprecated the DWG Import function. We are planning to replace it with a better function in the near future.

v7.2.7 - 14 May 2026

	Fixed a bug with "Open Structure" Area Loads where the "Projected X", "Projected Y", and "Projected Z" load directions produced no load when the projection direction was parallel to the area load polygon.
	Added an error message for models where no sections are defined when trying to use "Open Structure" Area Loads. Also updated the warning for members with invalid sections to list all invalid member IDs.

v7.2.6 - 12 May 2026

	Fixed a bug with "Open Structure" Area Loads where sections inclined in the loading direction were considered rotated, which lead to conservative results.
	Fixed a bug with "Open Structure" Area Loads where the tributary width of rotated sections was computed as a maximum between the height and depth of the section. This could lead to conservative or unconservative results. We are now using the diagonal of the bounding box of the section, which is conservative for all angles and all sections.
	Optimized algorithm used for hiding the clashing labels (introduced in v7.2.3) to give better graphical performance.

v7.2.5 - 30 April 2026

	Import ETABS files via File > Import > ETABS.
	The Load Combination Generator now includes new Checker and Sweep patterns: Sweep Pattern: Generates all three cases required by ASCE 7 for snow loads on multiple spans Checker Pattern: Generates all the possible permutations of loaded and unloaded spans.
	Area Loads will now always update on any model change when the model is small.
	Fixed some minor issues with "Open Structure" Area Loads.
	Minor general fixes for area loads.
	Fixed some issues with renderer canvases crashing or getting destroyed when too many S3D tabs are open concurrently in the browser.
	Fixed an issue where lines in screenshots were not in the correct position.
	Fixed an issue with copy-paste function not finding reference nodes.

v7.2.4 - 27 March 2026

	Fixed issue from v7.2.3 where opening a plate model in results mode in the 3D renderer would crash the graphics.
	Fixed issue from v7.2.3 where some column wind area loads would not get generated.

v7.2.3 - 26 March 2026

	Added presets to quickly load your favourite sections, materials, load combinations and settings. Default presets are provided for different regions (USA, Canada, Europe and Australia), and you can also create and save your own. Presets can be loaded from the startup launcher or via File > Load Preset.
	Added a search bar to the Settings UI to help you quickly find specific options. Also refreshed and modernised the overall appearance of the Settings interface.
	Area load variance checks have been significantly improved: The variance check for area loads is now summarized by force in the 3 global axes (Fx, Fy, Fz) and by moment about the 3 global axes (Mx, My, Mz). The force and moment variance equations have been updated so they will function in all of the foreseeable cases. The maximum force variance and the maximum moment variance are then combined, which allows us to continue returning single variance value per area load. The area load variance table has been updated to reflect the above changes. The area load variance table now has a "Download Values" link for each area load to allow users to follow the variance calculations in greater detail. The area load variance table no longer updates all area loads automatically when opened. For models with more than 20 area loads, a button has been added to allow users to force the update of all area loads.
	Similar to v7.2.2, more minor solver issues were fixed. These errors were stopping the solver from completing without any useful message returned to the user. Now returning more useful messages about why particular errors are occurring.
	When multiple labels overlap in the main renderer, only one is shown. This setting is enabled by default and can be toggled via Settings > View > Hide labels when they clash.
	Improved sharpness of the main renderer graphics on devices using display scaling levels other than 100%.
	Modernised the appearance of the startup launcher.
	Modernised the appearance of datasheets and added a button to quickly expand or collapse their width.
	When creating area loads and plates with the mouse, you must now double-click the first node. A message bar at the top of the page will guide you through this action.
	A message bar now appears at the top of the page when part of the structure is hidden, reminding you of the current view state.

v7.2.2 - 09 March 2026

	Open as New Model - Highlight part of your model and launch it into a new S3D model window. Simply select part of your model, right click and choose Open as New Model - carrying with it all materials, sections, geometry, loads and load combinations.
	(BETA Release) Strut and Tie Generator - turn your plates into a Strut + Tie grillage for easy diaphragm analysis, based on NZS3101 recommendations. Access by right clicking a plate element or clicking Edit > Plates > Strut and Tie Builder from the top navigation menu.
	The tables in the dynamic frequency results are now sortable and copyable (to export to spreadsheets).
	Renamed Section or Plate "Reduction Factors" to "Modification Factors" since they can also be used to increase stiffness rather than just decrease them.
	It is no longer possible to create rigid diaphragms that are not in the horizontal plane.
	Fixed minor solver issues which were stopping the solver from completing without any useful message returned to the user. Now returning more useful messages about why particular errors are occurring.

v7.2.1 - 24 February 2026

	Added quick up/down buttons next to the top-left dropdown in Section Builder to easily cycle through your sections.
	The Export All Tables to XLSX option now supports exporting only the min/max columns.
	Modernised the appearance of the left-menu results buttons in Solve Mode to align with the v7.2.0 visual style used for the main buttons.
	Enhanced the graphical symbols for prestress and thermal loads, and improved their tooltips to clarify how these loads act.
	Improved the accuracy of displacement span-ratio results when RS analysis is used.
	Fixed several issues affecting the member alignment tool.
	Corrected an issue where the results legend failed to detect peak RS analysis values at discontinuities. A related issue affecting the summary report was also fixed.
	Addressed several UI synchronisation problems within the single-member analysis function.
	Implemented various fixes for the new summary report introduced in v7.2.0.
	Fixed a crash that occurred when opening another design module while RC design, slab design, or composite design was already open.
	Resolved an issue where adding a CoG point using rigid links (via the Center of Gravity tool) would not work if no nodes were selected before running the function.
	Resolved an issue where some results for semi-rigid members were missing when RS analysis was used on structures with offsets or rigid links.
	Fixed an issue where prestress and thermal loads may have been incorrectly applied to cable members. Users will be alerted when opening older files that meet the affected conditions. We recommend reviewing the loads in these models. The improved graphical symbols should now help reduce confusion regarding load directions.

v7.2.0 - 10 February 2026

	Load Combination Pattern Generator. The existing Auto-Generate Load Combinations has been replaced with a Pattern Generator that guides you through designing and generating load combinations based on your defined patterns. Access it via LOAD COMBINATIONS > Load Combos > Load Combination Generator in the left-hand menu. To learn how it works, see our documentation or the Load Generator Quick Design.
	Loads Groups & Load Cases Interface. Access it via LOAD COMBINATIONS > Load Groups in the left-hand menu which allows you to set up load groups and load cases after selecting a design code.
	Favorite Load Groups. You can now save multiple favorite load groups through the new Loads Groups & Load Cases Interface.
	Import SAF files via File > Import > SAF.
	Export SAF files via File > Export > SAF.
	Added a new function for rounding all nodal coordinates in Edit > Nodes > Round Nodal Coordinates which assists with cleaning up nodal coordinates imported from external sources.
	Added a function to copy the current datasheet table to the clipboard (ready for pasting in Excel or other software).
	You can now disable non-linear effects of individual members. Simply change the "Disable Non-Linear Effects" property to "Yes" for an individual member. This is useful for bracing members where non-linear effects can somtimes produce spurious results.
	The summary report has been vastly improved: You can now choose which sections to include in the report. Added a thumbnail to the top-right corner of the report. Added a new section called “Reaction Aggregates”, which identifies the value and location of the worst reactions in each translational and rotational direction. Added a new section to report the model's sections. Added a new section for the nodal displacements. Added a new section for the member displacements. Added a new section for the member end displacements. Added a new section for the member forces. Added a new section for the member end forces.
	Improved/modernised appearance of main left-menu and top Model-Solve-Design buttons.
	The "Exclude Load Combinations" interface has been refreshed to better handle a large amount of load combinations.
	The main envelopes now ignore load groups and load cases by default in newly created models. Previously, they were not ignored. This behaviour can be adjusted in Settings > Solver > Envelopes.
	An unlimited number of custom envelopes can now be defined (previously limited to 10).
	When merging nodes through the right-click menu or the operations toolbox, you can now control the tolerance.
	You can now merge nodes via Edit > Nodes > Merge Close Nodes.
	The DXF import function now includes a setting for nodal-coordinate precision, which can help clean up nodal coordinates on import.
	Added a field in the pen-tool options to control the section ID of members created using the pen tool.
	When using the pen tool, a bubble now appears around a snappable point when it can be used.
	When using the pen tool, gridlines can now be used as snap points.
	Level lines are now dashed to distinguish them from gridlines. Other minor appearance improvements have been made to gridlines and elevations, including thicker lines and more consistent colouring.
	Left- or right-clicking gridlines or elevations now opens their right-click menu. They can also no longer be multi-selected, as this was not meaningful behaviour.
	Improved line support reaction labels by displaying only one label per support to avoid duplicates.
	Adjusted the fixity dots in the graphics so they are no more than 0.25 m from the ends of members.
	Top Menu > Edit > Loads > Assign Load Cases has been replaced by Edit > Loads > Manage Groups & Cases.
	Top Menu > Edit > Loads > Manage Load Groups has been replaced by Edit > Loads > Manage Groups & Cases.
	Left Menu > Load Combos > Design Codes has been replaced by the new Load Combination Pattern Generator.

v7.1.1 - 10 December 2025

	Fixed issue related to the precision of results when settlements are used (similar to fix rolled out in v6.2.8).
	Minor boost to solver speed on large models as reactions are now calculated more efficiently.
	Added an option to add notional loads for all 4 directions at once.
	Notional loads are now being drawn as separate components in the graphics.

v7.1.0 - 02 December 2025

	New UI design for the right sidebar which now uses the entire height of the screen. The buttons that were in the previous right sidebar are now shifted to the top-right of screen and they are pinnable. The scale slider is now collapsed and will expand on hover.
	New Operations Toolbox: Open and close the toolbox by clicking the arrow icon that extends from the new right sidebar. Access all software operations from this toolbox. They are categorized into General, Visibility, Nodes, Members, Plates, Supports, and Loads. Pin your favourite operations to the bottom of the new right sidebar so that they're easily accessible at any time during modelling. Operations will be disabled when not relevant and can also be hidden. Use the search field at the top of the toolbox to find any operation. Easily filter nodes, members, plates, and supports using the filter buttons at the top of the toolbox. Click "Shortcuts" at the top of the toolbox to assign custom keys to your favourite operations.
	Added new keyboard shortcuts to toggle visibility of nodes (SHIFT + N), members (SHIFT + M), plates (SHIFT + P), meshed plates (SHIFT + H), loads (SHIFT + L), supports (SHIFT + S), equivalent area loads (SHIFT + E) and gridlines (SHIFT + G).
	Added a Copy Loads option to the right-click menu. This allows you to duplicate existing loads by a chosen factor and assign them to a new load group.
	Loads can now be colored by load case. This setting is available in Visibility Settings (eye icon in right bar) > Loads > Color By. Previously, loads could only be colored by type (default) or by load group.
	The Member Extend tool can now extend a member to a node located anywhere in 3D space. The member is extended along its path to the plane orthogonal to the member that contains the node. Previously, it could only extend to another member to form an intersection.
	Added small up/down buttons next to the load combination selector in the results UI to quickly switch between load combinations.
	Added an icon in the load combination selector dropdown to indicate whether each combination has been downloaded and is ready for viewing.
	Line support reactions can now be averaged (point average or distributed average). This can be configured in the settings under the red Reactions button after solving.
	Added a new function to move the entire structure to the origin: Edit > Operations > Move Structure to Origin.
	Added directional arrows to area load and pressure boxes in the graphics. Previously, no arrows were displayed, making load direction difficult to interpret.
	Member prestress loads and thermal loads now respond to click events in the graphics.

v7.0.5 - 13 November 2025

	See changelog for Section Builder for the same day.
	Fix issue where plate holes were not being copied for Edit > Operations > Mirror.

v7.0.4 - 21 October 2025

	Merge any two selected nodes regardless of their distance apart. You can do this from the right-click menu or selecting the nodes and then using "J" on your keyboard. Previously it was only possible to merge nodes that were close together.
	Resolved an issue where very small length non-prismatic members would be missing member station results.
	Resolved a rare issue where some models that were solving before v7.0.0 were throwing a Solver Error from v7.0.0-v7.0.3.

v7.0.3 - 08 October 2025

	Added a button to download all load combination results in Output menu after solving. This will speed up switching between Load Combinations when viewing their results.
	When in model mode but results already exist, the solve button will now use the last analysis type rather than default to Linear Static Analysis.
	Fix some issues with new smart labels system released in v7.0.0.
	Fix some general issues with new graphics system released in v7.0.0.
	Fixed issue where the new one-way loads introduced in v7.0.0 would not run on the SkyCiv Desktop App.

v7.0.2 - 06 October 2025

	Added an error message when one-way area loads have 0 loaded members.
	Fixed a bug for one-way area loads when members use the global axis for offsets.
	Fixed a bug that temporarily hid non-rectangular area load pressure boxes in the graphics when applying the area loads datasheet.
	Resolved an issue where the pressure boxes of local area loads could temporarily appear to be applied in the reverse direction after reversing the node IDs to change the load direction. The equivalent distributed loads were always generated with the correct direction, and the graphical display corrected itself after the next model update.
	Resolved an issue where the pressure boxes of local non-rectangular area loads could appear to be applied in the reverse direction. The equivalent distributed loads were always generated with the correct direction.
	Fixed issue with some incomplete screenshots that started in v7.0.0 due to the newer graphics system.

v7.0.1 - 30 September 2025

	Fixed issue where the solver was not providing a warning for point loads, moment loads and distributed loads that used an invalid position (i.e. a position less than 0% or greater than 100% or start position greater than end position). The UI was always blocking this invalid input but it may have been possible to create invalid loads like this via import from another software, the API or the join member function. These types of invalid loads may have provided poor results from the solver.
	Fixed issue where the member join function would merge distributed loads and make position A larger than position B, which is considered invalid for the solver.
	Fixed issue with some incomplete thumbnails (file manager and analysis report title page) that started in v7.0.0 due to the newer graphics system.

v7.0.0 - 29 September 2025

	Improved One-Way area loads. The existing one way area load was renamed to "One-Way (Legacy)". The following improvements were made: All non-rectangular convex polygons now supported. Load distribution to angled members now supported. Continuous members and intersecting members now supported. Offsets are now considered to ensure that the total loading is preserved. Advanced option of multiple loading intervals (similar to column wind loads) now supported with comma separated values. Advanced option to exclude members by ID added. Advanced option to exclude either all internal members or only angled internal members. Cantilevered loads are no longer supported because they caused issues and violated basic statics in most instances.
	Improved solver speed by 2.7x generally. However, the speed of response spectrum analysis was vastly improved, especially on models that seemed to get stuck solving.
	Improved speed of graphics for main renderer by 2x. This new renderer will be used automatically for larger models, otherwise the older main renderer will be used.
	Non-linear Spring Supports which allows you to define the stiffness diagram of the spring so that it's dependent on the node's reaction or displacement.
	Dynamic Frequency Solver now returns rotational mass participation results rather than just translational mass.
	Improved Plate Section Cuts Tool: Significantly improved the performance of the tool. Added the ability to plot graphs directly on the model geometry with value visualization. A cut line can now be defined using an offset operation from a given segment. This is convenient, for example, if you want to plot a graph at a specific location of a slab and know the distance from the slab edge to the required section. There is no longer a need to calculate the coordinates manually. Added the ability to plot Membrane Force XY, Wood Armer Moment and Soil Pressure. Added the option to consider the two-thirds rule according to CSA when averaging moments in the effective width of a slab strip.
	Traffic lines which can be used to generate influence lines in the results. This is the first step towards adding moving loads in a future release.
	View color-scaled result diagrams for member results in the 3D renderer. Previously only solid colored segments were possible.
	Search bar will now work in results mode. Also fixed some bugs and issues with the search bar generally.
	Optionally export the solver results when exporting to SkyCiv File (JSON). Upon import, the results will also be imported into the software rather than only the model.
	Raised solver element limit to 100,000 elements (members + meshed plates). Previously 50,000 members or 35,000 meshed plates was the limit.
	More aggressive truncating applied to solver result values to reduce output file size.
	No longer removing loads that existed on removed tension/compression members. The solver was previously removing these loads when the members were removed.
	Submitting a section within the builder will no longer leave the builder automatically. This makes it quicker to open the next section for editing.
	You can now isolate members in the 3D renderer results view by simply clicking them. Hold CTRL while clicking to isolate multiple members.
	Organized visibility settings into expandable/collapsible containers.
	Added "Offsets" related appearance settings to the visibility settings so you can quickly toggle offset visibility and offset guide links visibility.
	Added ability to manually define parameters for ASCE 7-16 spectral loads without relying on latitude/longitude location. This means it can be used outside of USA.
	Added feedback regarding supported and unsupported DXF entities when importing DXF files.
	Pressing delete key while a datasheet is open will now delete selected model items if no cells in the datasheet are highlighted. Previously, the delete key was only able to affect the datasheet when the datasheet was opened.
	Added filter by Node ID or Member ID for point loads and moments in the datasheet.
	Added filter by Member ID for distributed loads in the datasheet.
	Added filter by Plate ID for pressures in the datasheet.
	Added UI options to toggle member and plate shapes for dynamic frequency shape results.
	Repair model now checks if a member's torsional DOF is released on both ends.
	Added ability to view all nodal masses in the dynamic frequency results (rather than just the masses converted from static loads).
	Added a graphical indicator inside the area load to indicate one-way loading direction.
	Fixed some annoyances and bugs with the left input menu.
	Improved the supports left input menu by adding a simple button group to control whether the support is a node, line and surface support.
	The grouping function now allows to auto-group members by their type.
	Simplified the rigid link system used for inclined roller supports.
	Improved the display of results for inclined roller supports by drawing a single reaction for the inclined roller.
	Fixed issue where projected area loads were using the projected length of the generated distributed loads rather than the projected area.
	Show the projected magnitude in the graphics label for projected area loads, projected pressures and projected distributed loads.
	Fixed issue where repeat operation would not correctly duplicate area loads or correctly listen to the "Ignore selected loads" option.

v6.4.6 - 17 June 2025

• Added an auto-save toggle in the main UI (bottom right of UI next to the file name). While the auto-save function already existed, it could not be toggled on/off without refreshing the software and it was not easily accessible.
• Added import option for Strand7 TXT files via File > Import Strand7 TXT.
• Added import option for Microstran ARC files via File > Import Microstran ARC.
• Added import option for Multiframe TXT files via File > Import Multiframe TXT.
• Added button in the right-side menu bar to launch search function.
• Node, member and load labels will automatically be hidden when larger models open. The visibility of these labels can always be controlled via the visibility settings.
• When previous solver results are downloading after opening a model and the user attempts to solve, the software will continue downloading the results rather than proceeding with a new solve.
• When previous solver results have been downloaded after opening a model, the "Skip Auto-Repair Model" popup will no longer be displayed when the user attempts to re-solve.
• The starting node of the pen tool can only be set by clicking the node. Previously hovering over the node would also set the starting node.
• The starting node of the pen tool will always be highlighted. Previously it was only highlighted in some cases which was confusing.
• The pen tool cursor and member length field will be highlighted in green when the starting node has been set. This signals that a member/node can be drawn with the next click.
• Improved the way ESC key exits the pen tool. One tap will remove the starting/reference node. A second tap will stop using the pen tool.
• Added an explainer for how envelopes work when they are viewed for the first time. This also directs to the user to the setting for the alternative envelope method if they prefer to change the setting.
• Lifted the max number of dynamic modes possible from 100 to 200.
• Fixed issue where downloading the summary report for large models with many plate elements would hang the browser. Also reduced the time taken to generate the report.
• An entire load (pressure, distributed load, area load) will now get highlighted when CTRL key is down and that item is clicked. Previously only the part of the load that was clicked would get highlighted.
• Fixed issue where models that used insertion points for offsets could not be exported to RVT or IFC.

v6.4.5 - 03 June 2025

• Added ASCE 7-16 and ASCE 7-22 spectral loads.
• Added a timer to the solver progress bar.
• Renamed the "ASCE" spectral loads to "AASHTO2012" since it was always based on that methodology rather than ASCE.
• When viewing reaction results, the node ID of the max/min reactions will now be shown in the top-left legend. These node IDs can be clicked to isolate the reaction.
• When viewing the envelope reaction results, the load combination of the max/min reactions will now be shown in the top-left legend.
• Improved the paste structure function by allowing the user to paste relative to the reference node or at a specific node ID. Previously the user needed to manually enter the coordinates of the paste location.
• Added feedback about the results of the member join and member intersect functions when they are used. Previously it was not obvious if these functions ran or were successful.

v6.4.4 - 01 May 2025

• Plate mesher can now mesh along members that are partially within a plate (i.e. crossing plate borders/holes).
• New operation to quickly change the length of members. Select one or multiple members and and then use Right-click > Change Member Length.
• View and export nodal translational displacements in File > Export > Spreadsheet.
• View and export nodal normalised translational displacements for each mode in the dynamic analysis results.
• When entering the fields for members and nodes to include in the plate mesh, the relevant members and nodes will be highlighted in the graphics for convenience.

v6.4.3 - 28 March 2025

• Added a function to duplicate sections.
• Pre-solve model repair will now convert normal members to continuous rather than splitting normal members when normal members pass through nodes.
• It's now possible to easily change the column/beam direction of one-way area loads and column wind load area loads via the left-menu or right-click menu.
• When hovering over a node that is a nodal support, the support ID and fixity code of the support will be shown in the hover info box.
• The fixity code can now be shown in support labels by toggling its visibility in Visibility Settings > Support Fixity Labels.
• Added quick buttons above Node A Fixity and Node B Fixity to quickly Pin or Fix the member-end.
• The Edit > Members > Re-submit all sections function will now fetch the latest database shape data (if it is a single database shape) and the re-solve it in SB. Previously it did not fetch the latest database data so if any updates were made to the database they wouldn't be reflected unless the user manually re-added the shape from the database.
• Fixed some issues with the groups table when sections were used as the group type.

v6.4.2 - 05 February 2025

• Bring your structural models to life with our AI powered mockups. Try it now visitng Output > AI Mockups.
• Improved speed of solver on very large models with over 100 load combinations.
• Center of Gravity tool now considers offsets of both members and plates. Previously offsets were not considered.
• Added a setting to control if the building slenderness check (global governing displacement) runs.
• The summary report now shows the node location where the global governing displacement exists to clarify how it is calculated.
• Added an extra button to the load combination generator which allows the user to clear the existing load combinations before importing the new ones.
• Fixed minor issue with column wind loads where sometimes it would skip distributed loads inside the elevation which would cause the variance to be slightly off.
• Added some warnings to datasheet when the table is not showing all rows for reasons like some filters are active or data exists outside the current visible range selected by the user.
• Fixed issue introduced in v6.2.6 where the "Change Mesh" button (after doing a mesh preview) would undo the last mesh but not allow the user to perform a new mesh.
• Improved Coloured Load Groups by making the colours more distinct.
• Fixed issue with unreadable text in some screenshots when the new dark themes are enabled.
• Fixed issue with incorrect orientation of some members when using the STP export.
• Added option to move the entire structure to the origin when importing DXF file which is useful when the DXF has large coordinates.

v6.4.1 - 06 November 2024

• Fix for previous release (v6.4.1) where tension/compression members that had prestress loads were incorrectly getting removed during the iterative analysis.

v6.4.0 - 01 November 2024

• Removed tension/compression members will be re-added into the structure for non-linear analysis if necessary. In previous versions, member reversals were only performed during linear analysis.
• Non-linear analysis can now be performed with directional supports.
• Removed directional supports will be re-added into the structure if necessary for both linear and non-linear analysis. In previous versions, directional supports were removed permanently and never re-added back into the structure.
• Some enhancements to the way member reversals work during the tension/compression member iterative analysis.
• Improved the messages and warnings that are returned from the tension/compression member iterative analysis and directional support iterative analysis.

v6.3.0 - 30 September 2024

• NEW: "FE Plate Model" area load which will use a plate model in the background to distribute the pressure of the area load to the supporting members. This type of area load is more flexible than the existing area loads as it can handle more complex areas.
• NEW: Cables can now be used with vertical Z-axis models (Z-directed self-weight) rather than only vertical Y-axis models.
• NEW: Implemented an improved cable element that converges quicker and generally has less convergence issues.
• NEW: Added ability to export members only or plates only when using the DXF exporter. Previously you had to export both.
• NEW: Added ability to choose whether to use 3DFACE or POLYLINE entities for plates when using the DXF exporter.
• Fixed issue where exported DXF files would not open in some CAD programs when plates were in the model. POLYLINE entities will now be used for plates instead of LWPOLYLINE entities.

v6.2.10 - 10 September 2024

• NEW: Dark themes (Dark + Black) which can be changed via Settings > View > Graphics Background Color.
• NEW: Groups can now be used as a filter for results in the 3D renderer (was already possible in the normal renderer).
• NEW: The Isolate by Plane and Select by Plane tools have been moved into a single tool at Right-click > Select/Isolate by Plane. This means the isolate tool now works like the select tool in that when defining the plane, you can now choose any plane rather than only the global planes.
• NEW: Right-click > Select/Isolate by Plane tools will now respond to click-selecting while the tools are open, so you can easily adjust how the plane is defined.
• NEW: Right-click > Select/Isolate by Plane tools can now isolate/select loads. Previously only nodes, members and plates were possible.
• NEW: Right-click > Select/Isolate by Plane tools can now define multiple planes for selections/isolations.
• NEW: Gridlines and Elevations can now be right-clicked in the results mode UI.
• CTRL + Click select now works in results mode (when no results are selected). Previously only CTRL + click drag would allow selection in results mode.
• The opacity of edges in the 3D renderer can now be controlled via the transparency setting for the element (member or plate transparency). Previously the edges were completely solid.
• The edges of elements in the 3D renderer will now be completely hidden if an item is suppressed or non-visible for results viewing. Previously the edges were always visible.

v6.2.9 - 27 August 2024

• NEW: Select By Plane function which can be accessed via the right-click menu. It allows you to select items from the model in a user-defined plane.
• NEW: Keyboard shortcut for screenshots (Ctrl + 9).
• NEW: Added result setting for true-scale deflection in the normal renderer (very useful for cable deflection).
• Fixed issue with some PDF reports not working well in BlueBeam software.

v6.2.8 - 12 August 2024

• Fixed issue with slightly imprecise reactions sometimes when using settlements in the model.

v6.2.7 - 7 August 2024

• Improved buttons above all datasheets. Also added "Remove Duplicate Rows" option for each datasheet. This is especially helpful to remove duplicate loads that are otherwise difficult to detect It will be added to Repair Model in future.
• Fixed issue where linear pressures might not have been considered in dynamic frequency or response spectrum analysis.

v6.2.6 - 22 July 2024

• NEW: NBCC 2020 load combinations added to load combination importer.
• NEW: Added model information tool to count the total number of items and selected items in the model. It can be accessed via Tools > Model Information.
• NEW: Added an easier measuring tool by simply clicking and dragging between two nodes.
• NEW: Automatically restore previous selections when using undo/redo to save some time.
• Consider line supports when using repeat tool.
• Consider nodal masses when using repeat/mirror tool.
• Fixed issue where random lines would appear on screen when zooming in to the limit when using the perspective camera.

Improvements to Member Designer:

1. New statistic showing summary (% and kg/lbs of steel) saved from a Designer run.
2. Settings window improved, clearer options for Analysis Interval as a dropdown rather than a number.
3. Percentage and notes on each section Designer run.
4. More infotips and clearer labels for a better User Experience.

v6.2.5 - 26 June 2024

• NEW: Nodal Acceleration and Velocity results for spectral load groups in response spectrum analysis. It can be found after solving via Dynamic Frequency > Detailed Results > Acceleration and Velocity.
• NEW: More convenient design code launcher.
• Fixed issue with incorrect internal results on torsion released members (FFFRRR end-fixity) when running non-linear analysis (with small displacement theory).
• Now allow up to 10 custom envelopes (up to 3 previously).
• Stopped showing arrows on members for the tension/compression of members in the "Simple" axial diagram as it was confusing some users and opposite to standard convention.
• Fixed issue with camera resetting when toggling between normal/grab/pen tools.

v6.2.4 - 27 May 2024

• NEW: Added setting to control whether non-visible loads are considered when calculating the scale of loads. By default this is OFF so that non-visible loads will not be considered for scaling. It can be controlled in Settings > View > Consider non-visible loads for scaling.
• NEW: Added setting to control whether point load and reaction arrows will use some minimum length if they are small. It can be controlled in Settings > View > Use a minimum length for point load and reaction arrows.
• NEW: Added table to show min/max results for plate section strips.
• NEW: Added button to normal renderer to reverse color scale of plate results (like what already existed in the 3D renderer).
• NEW: Added button to normal renderer to set a custom min/max range for the color scale of plate results (like what already existed in the 3D renderer).
• NEW: Added min/max locations for plate results in top-left result legend.
• NEW: Added visibility setting to control support labels. It can be controlled in Visibility Settings > Support Labels.

v6.2.3 - 22 April 2024

• NEW: Min/max summary for reactions in top-left results legend.
• NEW: Re-number supports function via Edit > Supports > Re-number IDs. Also made it possible to re-number the IDs of a specific selection rather than re-numbering the entire model.
• Fixed issue where results summary main table could miss the worst utility ratio for "Material Yield" and "Material Strength" rows. This would result in a disconnection between the worst ratio shown in the full members table and the main summary table.
• Fixed issue with linear pressures applied locally to plates with a non-zero rotation. Also now blocked using a local linear pressures that are not applied in the local z-axis.

v6.2.2 - 15 April 2024

• NEW: Saved Views functionality which allows you to save/load your own custom views via Visibility Settings > My Views.
• NEW: When multiple plates are selected, the total combined plate area will be shown in the bottom bar. You can also use Right-click > Plate Area to view the area of individual and multiple selected plates.
• NEW: Added setting to toggle shear stress results of concrete/wood sections via Settings > Solver > Calculate shear stress of wood/concrete sections. Disabling shear stress will create a smaller model file size which helps reduce processing time of models with many concrete/wood sections where shear stress is less important.
• Improved plate section cuts/strips tool.
• Improved speed of member intersection function.
• Adjusted ψ,0 factor value to be 0.6 for wind loads in Eurocode load combinations (previously 0.5).

v6.2.1 - 11 April 2024

• Added new setting for more evaluation points inside continuous members via Settings > Solver > Apply eval points to each span inside continuous members.
• Added new setting for controlling the tolerance around detecting nodes along continuous members via Settings > Modelling > Detection for Nodes along Continuous Members.
• Repeat operation function now takes into account area loads.
• Unstructured quadrilateral meshing method is now the default meshing method as it is more general.
• The custom stress limit check will no longer be included in the results summary when the custom stress limit is empty/blank which is the default behaviour.

v6.2.0 - 13 March 2024

• NEW: Custom Envelopes which can be added via Edit > Loads > Customize Envelope.
• NEW: RISA 3D Import via File > Import > RISA 3D.
• NEW: Retain the result sign when using Spectral Loads in Response Spectrum Analysis. You can find this option when configuring the spectral load: RS Load Settings > Save Sign
• Envelope Absolute Max of the non-alternate envelope method (Settings > Alternate Envelope Method checked OFF) now retains the result's original sign.
• Interpolation functions improved for plate section cuts.
• Fixed issue where removed tension/compression members were not being removed from the reduced accuracy buckling model. This affected any buckling results for models that warned about reduced buckling accuracy (typically models with offsets and/or rigid links) and had removed tension/compression members.
• Fixed issue with nodal results (near node member forces) tool where it would only report one value instead of all values at a point where multiple values might exist. See more information about this here. (available since 02 March)
• Some speed improvements when using directional supports.
• Allow spring supports with no F fixities to be connected to rigid links (as rigid link cannot be connected to a support normally).
• Allow zero-length member for rigid link.
• Raise meshed plate limit to 35,000 (available since 20 February).
• Improve UI spacing/sizing for left-menu on smaller screens.
• Improved labels for load combinations in warnings and info returned from solver as it now distinguishes between user defined load combinations, load cases and load groups.
• Stop always re-generating area loads when model is originally loaded into the software. This allows larger models with many area loads to be loaded much faster.
• Fixed annoyance/issue with overlapping plates in plate results graphics when using orthographic camera (available since 27 February).
• Fixed issue with soil pressure results next to adjacent plates when only some plates were chosen to run the results (available since 14 February).
• Added more details (time and file name) to last session recovery prompt (available since 13 February).

v6.1.9 - 05 December 2023

• NEW: Automated Drawings Feature via Output > Drawings lets you instantly produce DXF drawings of your steel and concrete structures - including beam/column reinforcement, plan views, gridlines, elevations and much more...
• NEW: Show the factored loads for a specific load combination after solving via Visibility Settings > Factored Loads.
• Added the current result label to the top-left legend of the normal wireframe renderer if only a single result is showing. This is useful for screenshots.
• Joining members will now account for member point loads, member moment and distributed loads. Previously these loads would not be accounted for when joining.
• Fixed issue where using the re-number IDs function would ruin IDs used for groups.
• If you only change the ID column in the datasheet, then the changed ID will be used in the groups too.
• Fixed some unit conversion issues with STP export.

v6.1.8 - 02 November 2023

• NEW: Added option to reverse plate normal axis in right-click menu.
• Fixed issue where complex concave plates would not flip their normal axis when using the plate alignment tool.
• Keep hidden elements hidden when merging models.

v6.1.7 - 03 October 2023

• Fixed minor issue with dynamic frequency analysis. It very slightly affected the nodal masses converted from static loads of members that use different end-fixities (e.g. FFFFFF on Node A and FFFFRR on Node B).

v6.1.6 - 28 September 2023

• Fixed issue where plate alignment tool would not work which was introduced in v6.1.0.
• Fixed issue where plate mesher would not automatically align local axes of meshed plates to parent plates introduced in v6.1.0.

v6.1.5 - 15 September 2023

• Added button to reverse the color scale of results in the 3D renderer so that max results can shown as "blue" and min results be shown as "red".
• Fixed issue with non-rectangular area loads not calculating the correct area (always giving variance warning) with some imperial pressure units (ksi, psi, psf).
• Improve the angles shown in the measure tool.

v6.1.4 - 29 August 2023

• NEW: STP Export via File > Export > STP.
• NEW: Option to use European formatted numbers in CSV export (e.g. 1234,56789).
• Fixed issue where last member station of continuous members may been very slightly off 100%.
• Continuous members that have local x-axis offsets without any variation in local y-axis or local z-axis offsets between node A and node B will now connect to nodes outside their post-offset span but inside their pre-offset span via a rigid-link. Previously it would try to use a normal member resulting in an overlapping member and poor member stations.

v6.1.3 - 22 August 2023

• Fixed an issue with member stations of non-prismatic members that have local x-axis offsets without any variation in local y-axis or local z-axis offsets between node A and node B (introduced in v6.1.0).
• Non-prismatic members that are "Normal" type will now use the same number of member stations as "Continuous" type members. Previously they were using many more member stations.

v6.1.2 - 18 August 2023

• NEW: Trim/Extend Tool for members which can be accessed in Edit > Members > Trim/Extend/Join/Intersect Tool or Right-Click > Trim/Extend/Join/Intersect Tool.
• Added soil pressure and wood armer plate results to 3D renderer.
• Allow user to choose between two different units for soil pressure results: Force/Length^2 OR the stress unit setting.
• Fixed issue where soil pressure unit label would be incorrect sometimes.
• Improved plate auto-mesher. You can now choose whether to re-mesh previously meshed plates (previously it would re-mesh everything). If a plate fails to mesh, it won't stop the whole auto-mesh process. Also fixed some issues with the ESC key not stopping the process sometimes.

v6.1.1 - 10 August 2023

• NEW: 3D renderer centerline mode can now be used for color scale results and deformed shape. Previously it was only possible when using "Solids" mode.
• Fixed issue where the member stresses table in the summary report was not matching the main summary table. This was because the member stresses table was checking bending stresses whereas the main summary was not. The member stresses table has been changed so that it does NOT check bending stresses since these stresses won't actually be experienced by the members in reality. So only axial, torsion, shear and combined stresses are checked by both tables now.

v6.1.0 - 18 July 2023

• NEW: Plate strips in the plate cuts tool as well as general improvements to plate cuts tool.
• NEW: Load group manager which can be accessed via Edit > Loads > Manage Load Groups. It allows you to rename load groups, delete load groups (including all loads using that group name) and bulk import new load groups.
• NEW: Datasheet clear button can now clear a range of IDs chosen by the user rather than only the current datasheet page.
• NEW: Track how much time you're spending in S3D for each model in File > Job Details > Time Spent Table.
• NEW: Added ability to custom order screenshots in the Analysis Report.
• NEW: Added ability to sort screenshots in the camera roll by newest, oldest, A-Z and Z-A. You can also use a custom order by hovering over the image and then using the up/down buttons to change their order. This custom order will be reflected in the Analysis Report also.
• NEW: Added ability to rename screenshots in camera roll.
• NEW: Added ability to preview screenshots in camera roll without needing to download them.
• NEW: Added settings in Settings > View > Thumbnail to control visibility of labels, supports and loads in the thumbnail of the file manager and analysis report PDF title page.
• Fixes some issues around the "Column Wind Load" area load involving unit conversion and working with large node coordinates (typical when working in mm and inches).
• Stopped linearly interpolating the x-axis offset of continuous members that have local x-axis offsets without any variation in local y-axis or local z-axis offsets between node A and node B. This change was rolled out to detection of nodes along continuous members in the solver as well as the GUI split member at intersecting nodes function.
• Improved intersecting members function.
• Speed improvements for mesher.
• Added button to Nodal Results table which will copy the table to a spreadsheet so a CSV/XLSX doesn't need to be downloaded.
• Added button to CSV Export table which will copy the table to a spreadsheet so a CSV/XLSX doesn't need to be downloaded.
• 3D Renderer results scale will no longer include results from hidden members.
• Added cumulative mass participation results for dynamic frequency for easier interpretation.
• Added Licence Number to Analysis Report.
• Fixed some issues with suppressing items from the datasheet.
• Fixed issue with XLSX export where numbers were not being recognised as number cells in MS Excel.
• Fixed issue where Surface Spring Support tool was using the incorrect direction code for the support.
• Added a setting for Envelope Deflection Sum Re-calculation (by default it is off). Previously this was enabled so that the total deflection was the envelope's X, Y, Z total deflection but this is not the structure's total envelope deflection in reality. (available since 05 May 2023)
• Re-added integration with connection design. Simply highlight two members and use Right-click > Launch Connection Design.
• Fixed long-standing issue with PDF reports being larger than standard A4 size.
• CSV/XLSX export will now use the group selector in the results GUI to filter members/plates before export.
• Improved pinch zooming on trackpads by stopping it from zooming the browser page.

v6.0.1 - 02 March 2023

• NEW: Dynamic Frequency Analysis now works with tension/compression only members and negative/positive directional supports. These members will not be removed and these supports will act in all directions for the purpose of the dynamic frequency analysis.
• Dynamic Frequency analysis now excludes masses at supports when calculating total structure mass for mass participation results.
• Dynamic Frequency analysis results now ranges between 0.001Hz and 10,000Hz rather than 0.001Hz and 1,000Hz.
• You can use Settings > Solver > Dynamic Frequency > Area Reduction Factor for T/C only members to reduce the area stiffness of tension/compression only members during the dynamic frequency analysis.
• Improved single member plot points functionality.

v6.0.0 - 15 February 2023

• NEW: Improved solver speed/performance for bigger structures.
• NEW: Choose which linear equation solver to use via Settings > Solver > Linear Equation Solver. Usually the default/recommended choice will be the fastest but it's possible to adjust this setting to get faster speeds depending on the condition of the model.
• NEW: Repair model tool which runs much faster than the older version and has a more friendly UI which can better preview the changes.
• NEW: Plate Section Cuts tool which can be accessed inside the plate results after solving (available since 20 Jan 2023).
• NEW: Improved performance and lowered the memory/RAM usage of the 3D renderer for larger structures.
• NEW: Loads and plates now included on level isolation in the gridlines and elevations module (available since 25 Jan 2023).
• NEW: Set a custom color for the min/max table results in the Analysis Report.
• NEW: View applied Notional Loads after solving by clicking the table icon next to the Visibility Settings > Notional Loads button.
• By default, plates will now have a drilling stiffness factor of 1 as this helps with stability.
• Fixed some issues with deleting nodes or unmeshing around line supports.
• NOTE: This version was incorrectly labelled as v5.12.0 from 15 Feb to 22 Feb.

v5.11.0 - 10 January 2023

• NEW: Mesh Quality Tool which can be accessed via Edit > Plates > Mesh Info > Analyze Mesh Quality.
• Meshed plates can now be located via CTRL + F.
• Fixed issue where it was not not possible to edit invalid area loads via the left-menu (only from the datasheet).
• Graphical locator pulse is now smoother/faster on larger models.

v5.10.2 - 14 December 2022

• NEW: Member alignment tool which allows you to align a member with the vertical axis, a custom vector or another vector.
• Disabled shear stress and torsion stress for composite members. They will be re-added in a future update to be much more accurate.

v5.10.1 - 9 December 2022

• NEW: More modern global axis helper in the main/wireframe renderer. It is now a 3D cube where every face, edge and corner is clickable and can change the current camera view.
• Fixed major issue where linear plate pressures were being applied incorrectly when the default pressure force unit wasn't being used (i.e. kPa or ksf wasn't used). Users will be warned about this issue when opening older files containing this issue.
• Improved readability of hoverable labels in the graphics.
• Bill Of Materials in report will use continuous/physical members rather than the analytical members. Also made the table more readable by sorting the rows by the Section ID.
• Added a visibility option for member-end fixities.
• No longer checking area loads variance before solving if results are already available and model has been unchanged.
• Fix issue where plate local axes would not show in results mode.
• Disabled same plane and same local axis requirement for plate wood-armer results.
• CTRL + Click in results mode will now isolate multiple elements. CTRL + Shift + Click will open the single member results box for that member.
• Visual offset only works for local y-axis offset and local z-axis offset. The local x-axis offset will be both visual and affect the actual position of the member.
• You can now control the exact position of the camera using the camera icon button in the bottom-left corner of the graphics.

v5.10.0 - 30 November 2022

• NEW: Custom colors can now be used for the diagrams/graphs (shear, moment, torsion, axial, displacement and stress).
• NEW: Split by Intersecting Selected Nodes option which allows you to split only by selected/highlighted nodes rather than all nodes along the member's length.
• NEW: Soil Pressure plate result for plate surface spring supports.
• NEW: Right-click menu for the 3D renderer which brings many of the operations and tools from the normal renderer into the 3D renderer.
• NEW: Hiding, showing and isolating elements is now possible in the 3D renderer.
• NEW: Reverse the node order of members and plates via the right-click menu.
• NEW: "Select by Plane" option is now available in the right-click menu when single-clicking a node, member or plate.
• NEW: Plate mesher now how dedicated auto-fill buttons for detecting nodes and members in the plane of the plates being meshed. These functions will now also auto-run when opening the mesher for larger structures. The mesher can also filter diaphragm plates when meshing as it's usually not desirable to mesh diaphragms.
• NEW: Two-way integration between gridlines and the S3D model. Previously only data was sent from gridlines module to S3D.
• NEW: Tools for drawing members from gridlines module.
• NEW: Cursor coordinate helper in the gridlines module.
• NEW: Add gridlines by typing coordinates in the gridlines module rather than using the mouse.
• NEW: Option to change thickness of gridlines.
• NEW: Added a new field for orthotropic plate materials: Poisson's ratio xy (ν_xy). Previously, this was being auto-calculated based on Ex, Ey and Gxy but now it can be manually set.
• NEW: Added G + Q_w SLS load combination for AS1170.
• Improvements to treatment of plate reduction factors which is more in-line with how other structural software works.
• Fixed issue with displaying gridlines when the model had no nodes.
• Fixed issue with plate mesher missing internal member lines occassionally.
• Fixed issue where nothing would happen when copying-pasting only nodes.
• Fixed issue with some max/min and envelope results for response spectrum analysis.
• Improved right-click menu speed when many elements selected.

v5.9.2 - 31 October 2022

• NEW: Line Support. Automatically add supports at nodes anywhere along the defined line by changing the support type to LINE and defining two nodes for the line.
• NEW: Drilling DOF option for Plates. Simple change the "Drilling Stiffness Factor" attribute for each plate. Adding a drilling stiffness (for the plate's normal axis rotation) can help with model stability especially for dynamic frequency analysis.
• NEW: Gridlines and elevations tool. Complete overhaul of the original version of this tool.
• Improved solution speed for larger structures with offsets and/or rigid links.
• Plate Wood Armer results can now be exported via CSV.
• Fixed some UI issues and annoyances with wood armer results.
• Fixed issue with solver completion audio alert which stopped working in mid-September.
• Fixed issue with plates results color contour scale disappearing sometimes on larger models.
• Thinner lines in main wireframe graphics to make the graphics a little cleaner.
• Result label units are now disabled by default. Toggle their visibility via Results UI > Visibility Settings (Graph icon in the right-bar) > Result Units.
• Improved labels for member displacement results. Previously the position of absolute max translation would be displayed for each member. Now the position is dependent on which results are ticked on (translation or rotation) so that max rotation points are not missed.
• Added a setting for hovering over result diagrams to show values at member stations. It is off by default and can be found in Results UI > Visibility Settings (Graph icon in the right-bar) > Member Stations.
• Increased the number of load combinations allowed for smaller structures (previously capped at 250).

v5.9.1 - 04 October 2022

• NEW: Surface Spring Supports (Subgrade modulus) can be added from Edit > Plates > Surface Spring Support.
• NEW: Show Plate Max/Min values in graphics.
• NEW: NBCC 2020 Spectral Loads.
• NEW: Groups Force Summary added in Analysis Report which is a summary table of the max/min forces and moments for each member group.

v5.9.0 - 28 September 2022

• NEW: Plates can now be used with response spectrum analysis.
• NEW: Isolate a single plate when viewing results.
• NEW: Custom colour contour range for 3D renderer results.
• NEW: Proportional arrows setting for reaction results in graphics.
• NEW: More options for filtering member and plate selections via Right-click > Filter Selection or CTRL + SHIFT + F.
• NEW: Section stiffness reduction factors via Edit > Members > Edit Section Reduction Factors.
• NEW: Plate stiffness reduction factors via Edit > Plates > Edit Plate Reduction Factors.
• NEW: Search Bar to locate parts of your model or find features - hit CTRL + F to start searching!
• NEW: Table of contents page option for analysis report in HTML (with clickable anchors) and PDF.
• NEW: Added button to select all screenshots for analysis report.
• NEW: Bring back your previous selection via Right-click > Restore Previous Selections.
• Improvements to accuracy of orthotropic plates.

v5.8.4 - 24 August 2022

• NEW: Column-Wind area loads can now be applied in global and local directions. This is helpful for snow loading.
• NEW: One-Way and Column-Wind area loads can be applied to systems in which members only partially cover the extents of node boundary.
• NEW: Area loads can now be applied to systems with suppressed members.
• NEW: One-Way and Column-Wind area loads can now be applied to trapezoidal configurations.
• NEW: Measure tool can now measure individual members and the angle between two members. Previously it could only measure the distance between two nodes.
• NEW: Physical members filter added for grouping.
• Improved solution speed for larger structures with offsets and/or rigid links.
• Re-mesh all plates (one at a time) in the model using Edit > Plates > AutoMesh Model. Sometimes meshing all plates at once will not correctly find relevant nodes/members. This new method corrects that by meshing one plate at a time.
• Fixed issue with bending stress values (introduced in v5.8.0) when the user has manually changed Iy and/or Iz.

v5.8.3 - 16 July 2022

• Deflection Span Ratio results will now report the worst cases (i.e. highest deflection) in Envelope Max and Envelope Abs Max cases. Previously the worst cases were in Envelope Min because a smaller ratio number is worse.

v5.8.2 - 04 July 2022

• Fixed an issue with the Deflection Ratio calculations via Span Method 2 when the member had two free ends (two overhanging ends).
• Short overhanging members in continuous members (less than 200mm in length) will no longer be treated as cantilevered for the Deflection Ratio calculations via Span Method 1. This will possibly be introduced as an adjustable setting in future.

v5.8.1 - 30 June 2022

• NEW: Plates can now be imported/exported through DXF as 3DFACE or LWPOLYLINE entities.
• Added yielding check for the Simple Buckling calculations added in v5.7.5. The buckling calculations will also use the Johnson Formula if Settings > Solver > Parabolic Johnson Buckling is enabled.
• Added options for local, global and relative displacement for single member graphs. Previously only local was available.

v5.8.0 - 23 June 2022

• NEW: Improved accuracy of bending stress, shear stress and combined stress for members with unsymmetric sections and non-template sections. These stress results will now be with respect to the member's local principal axis.

v5.7.7 - 1 June 2022

• Copy-Paste function now allows copy of distributed loads and point loads as well as the ability to paste onto to multiple nodes at once.
• Fix issue with member-line passing through geometric centroid rather than TSM centroid for composite material sections.

v5.7.6 - 19 May 2022

• Show faint guide lines for offset positions via Settings > Modelling > Show offset guide links.
• Improved quality of meshes from plate mesher.

v5.7.5 - 12 May 2022

• NEW: Simple Euler-Buckling calculations for each member added as an alternative to the regular buckling analysis.
• NEW: New settings for reversing the direction of the selection box tool. Also can be changed in user account software settings.

v5.7.4 - 27 April 2022

• NEW: Copy-Paste Functionality. Use CTRL + C and CTRL + V on parts of your model. It works between different windows as well as within the same model.
• Ensure the camera view stays consistent between the wireframe and 3D renderer when switching between them.
• View nodal masses that were converted from static loads in the UI after solving or in the analysis report.

v5.7.3 - 11 April 2022

• NEW: Non-prismatic members can now also be set to Continuous.
• NEW: Non-linear Distributed Loads: Enter in an equation or formula to apply non-linear distributed loads to members.
• NEW: Import model API JSON without clearing original model so that two models can be merged.
• When unmeshing, don't remove nodes if they are connected to supports or loads.
• Fix issue with projected area loads.
• Fix issue with directional supports when offsets involved.

v5.7.2 - 31 March 2022

• NEW: Global Projected Loads for distributed loads, plate pressures and area loads.
• Improve variance check for area loads.

v5.7.1 - 24 March 2022

• Improve processing speed of inner-members for two-way area loads.
• Fix issues with groups table.
• Fix more issues with area loads.

v5.7.0 - 16 March 2022

• NEW: Non Rectangular Area Loads. Users can now add area loads to irregular shaped planes, by assigning a pressure to a number of members with a closed space.
• NEW: Maximum Combined Stress result.
• NEW: Custom image and title name can now be used for PDF report title page.
• NEW: Loads can now be displayed in the 3D renderer.
• NEW: Coloring option for Load Groups in Visibility Menu > Colour Load Groups.
• Added a helper button to orient a members local y-axis to the global vertical axis.
• Improved combined stress result options.
• Re-organised settings menus.
• Added a setting Building Slenderness Limit for the Results Summary in Settings > Solver > Summary Result Settings.
• Fix more issues with area loads.

v5.6.0 - 01 March 2022

• NEW: Semi-rigid connections. Change the member-end fixities to use "S" in the fixity code for the y and z-rotations and you'll be able to enter a rotational spring stiffness for each end rotation.
• Solver will now remove disconnected nodes and throw a warning instead of stopping and throwing an error.
• Result Summary Deflection Check will only use Serviceability Load Combinations if they exist.
• Improve buckling analysis accuracy.
• Fix issues with area loads.

v5.5.5 - 07 February 2022

• Improvements to shear stress calculations.
• If shear area is manually specified for a Timoshenko beam then it will be used to calculate shear stress instead of the automatically calculated shear area from the section builder.

v5.5.4 - 01 February 2022

• Improved repeat/copy operation as original structure can now be removed so it acts like a move function. Improved rotation operation.
• Fix occasional reactions issue when offsets or rigid links are used with non-linear finite displacement theory.
• Fix occasional convergence issue when prestress loads are used with non-linear finite displacement theory.
• Other bug fixes.

v5.5.3 - 21 January 2022

• NEW: IS 875 Load Combinations in the auto load combination generator.

v5.5.2 - 12 January 2022

• NEW: You can turn off extrapolation of plate results from gauss points to nodal points via Settings > Solver > Extrapolate Plate Results. Previously this was always on.
• Fix an issue with validation of continuous members when the member uses offsets.
• Fix an issue with linear pressure validation.

v5.5.1 - 2 January 2022

• Improvements to Timoshenko beams and non-uniform distributed loads.

v5.5.0 - 9 December 2021

• NEW: Thermal Loads can now be added via Advanced > Thermal Loads.
• NEW: Insertion Points functionality added under member end offsets. Use "top", "bottom", "right", "left", "center" or "shear" in the Member Offsets input to control the insertion point location.
• NEW: Visual Only member offsets. These offsets do not affect the analysis and are used for visualization only. Simply add "visual" as the 4th comma separated value in the offset property of the member.
• NEW: Shear Modulus property for materials to assist with non-isotropic members.
• NEW: Right click to quickly connect node(s) to a member. Highlight node(s) and a single member, then right click to connect the node along that member (it will take the shortest distance).
• Improvements to finite displacement non-linear analysis (implemented 7 December 2021).
• Scale slider now scales moment loads and moment reactions.

v5.4.4 - 30 November 2021

• Improve how the local axes of elements are computed when they are slightly-off the global Y-axis. User will be prompted if this affected the orientations of elements in older files.

v5.4.3 - 1 November 2021

• Vastly improved the mirror operation so it can correctly handle offsets and sections that are not fully symmetric.
• Fix for node labels via API.

v5.4.2 - 03 November 2021

• NEW: Gridlines and Elevations helper which can be accessed via Advanced > Gridlines & Elevations.
• Area Loads - Column wind elevation loads can now be applied perpendicular to span beams.

v5.4.1 - 27 October 2021

• NEW: Datasheet table filters to easily manage larger datasets.
• Datasheet speed improvements.

v5.4.0 - 21 October 2021

• NEW: RC Plate Design module for slabs.
• NEW: Added Elevation Direction field for column wind loads.
• You can now add more than one notional loads case and then factor it within the load combinations.
• Improve the Non-Prismatic UI within the section builder as you can now choose as end-shape rather than defining the variation manually.
• Bug fixes for area loads.

v5.3.2 - 28 September 2021

• Added option to consider offsets of prismatic member segments for non-prismatic member sections.
• Added setting to turn off smoothed plate nodal results in Settings > Solver > Smooth Plate Nodal Results.

v5.3.1 - 20 September 2021

• NEW: Temporarily hide offsets graphically by toggling Settings > Other > Show offsets visually.

v5.3.0 - 06 September 2021

• NEW: Graph multiple load combination results simultaneously and choose different colors for their result sets.
• NEW: Project Report Manager saves your latest project reports to your cloud file storage for easy future access. See File > Report Manager.
• Hidden members will be retained when undo/redo is used.

v5.2.3 - 05 August 2021

• NEW: Option for Analysis Report PDF font size.
• Improve detection of nodes along continuous members.
• Improve caching of results of saved models.

v5.2.2 - 26 July 2021

• Fix issue with duplicate/unwanted modes shapes being returned in dynamic frequency analysis results in some cases.
• Fix minor issue with Response Spectrum Analysis when springs supports used.

v5.2.1 - 20 July 2021

• NEW: IFC Export via File > Export > IFC.
• Improved area loads speed and performance.

v5.2.0 - 01 July 2021

• NEW: 3D Renderer (v2) which has more display features included like labels, shadows etc and a new appearance.
• NEW: Control which nodes connect to a rigid diaphragm by right-clicking the diaphragm plate > Plate Diaphragm Nodes.
• NEW: Lock the current view by clicking the padlock icon next to the global axis or using CTRL + L. This is useful in results mode when you need to drag move labels without accidentally rotating the model.
• Improved the iterative analysis for tension/compression members.

v5.1.1 - 23 June 2021

• NEW: Export model and results to XLSX spreadsheet via File > Export > Spreadsheet.

v5.1.0 - 17 June 2021

• NEW: Notional Loads can be added via Advanced > Notional Loads.
• Envelope Cases can now be used for the Analysis Report.

v5.0.2 - 08 June 2021

• Datasheet right-click menu options are now more easily accessible and noticeable in the options menu above the datasheet table.
• Improve DXF importer so that it does not always replace members if they already exist.

v5.0.1 - 03 June 2021

• Fixed some issues with moving connected nodes and shifting nodes operation.
• Solver now ensures that all internal members used for a continuous member use the same local axis system. Previously this might not have been the case with members slightly misaligned with the vertical global Y-axis.
• When creating a plate via the mouse, you can now finish the creation by using the ENTER key.
• When creating a plate via the mouse, clicking other elements will not lose the selection until the plate creation is finished.

v5.0.0 - 17 May 2021

• NEW: Suppress parts of the model. You can temporarily suppress elements in the model via the left-menu, right-click menu, datasheet or Advanced > Suppressed Elements.
• NEW: Filter load-combinations. Temporarily exclude load combinations before solving to save on solve time.
• NEW: Repair Model function will now locate the position of the changes when hovering over the information icon of a repairable task.
• NEW: Speed and performance improvements to the solver.
• Tabular and CSV Reaction results are now more easily accessible from under the red Reactions result button. Sum of reactions in each axis is also calculated.
• Nodes will no longer be deleted when they're not the only type of element selected in the graphics.
• Improved mouse-click accuracy for lines/members.
• Improved appearance of left-menu button sets.
• Added LC name label to top-left graphical legend which will now also appear in screenshots.

v4.10.2 - 20 April 2021

• Improved Drag Select Box. The drag select box won't cause previous selections to be de-selected. It will also invert the selection rather than just always selecting but if the old behaviour of always selecting can be toggled via Settings > Other > Invert selection on drag select.
• Various bug fixes.

v4.10.1 - 17 March 2021

• Improved plate graphics colour.
• Fixed issue with applying linear pressures via datasheet.

v4.10.0 - 05 March 2021

• NEW: Rigid-Diaphragm plates. A plate can be used as a rigid diaphragm by changing the diaphragm property of the plate to "Rigid".
• NEW: Dynamic Frequency Analysis of structures that include plates.
• NEW: Plates now have a membrane thickness, bending thickness and shear thickness property to control the stiffness of each action.
• NEW: Orthotropic Plates. This is done by creating orthotropic material properties (Ex, Ey, Gxy, Gxz, Gyz) and then assigning this material to the plate.
• NEW: Non-Linear Analysis with Tension/Compression Members. Previously this was unavailable/disabled if a non-linear analysis was run when the structure included these types of members.
• NEW: View full buckling results table in the UI rather than just the output report.
• NEW: Ignore parts of the structure under a specific vertical level for dynamic frequency analysis via Settings > Solver > Dynamic Frequency Vertical Cutoff.
• Improved Section Legend to use better icons.
• Graphical change with the way member prestress load inputs are represented. Positive magnitudes will cause an axial compression so the icon will be red. Negative magnitudes will cause an axial tension so the icon will be blue.

v4.9.1 - 03 February 2021

• NEW: Control the visibility of rigid members in Visibility Settings > Rigid Link Members.
• NEW: SkyCiv Optimizer auto-running in background after solving to suggest a more optimized model. This can be controller via Settings > Solve > Auto-run SkyCiv Optimizer.
• NEW: Remove unused sections and materials via Repair Model.
• Zoom in closer with orthographic camera in the main renderer.

v4.9.0 - 18 January 2021

• NEW: Add tapers and haunches (non-prismatic members) via Section Builder > Taper (Right-Menu).
• NEW: Bottom Status Bar. Control the visibility of items in the status bar via Settings > Status Bar.

v4.8.2 - 13 January 2021

• NEW: Evaluate a member's result value at any point along the member via the Single Member Result function.
• NEW: Choose whether to include rigid links as part of the member's for Area Loads in Settings > Other.

v4.8.1 - 25 November 2020

• NEW: Re-number and re-order IDs of nodes, members and plates via Edit > Re-number IDs.
• NEW: Hide load labels in visibility settings.
• NEW: Hide member design result labels in result visibility settings.

v4.8.0 - 18 November 2020

• NEW: Automatically move connected nodes. When a member is moved, any nodes along the member will be moved with it.
• NEW: Add Bracing through Right-Click Menu: Select/highlight 4 nodes and then Right-click > Add Bracing.
• NEW: Add Plates through Right-Click Menu: Select/highlight 3 or more nodes and then Right-click > Add Plates.
• NEW: Add Rigid Diaphragm through Right-Click Menu: Select/highlight nodes and then Right-click > Add Rigid Diaphragm.
• NEW: Use Global Axis for Member Offsets in Settings > Other > Member Offsets Axis.
• NEW: Wood-Armer Moment Plate Results.
• NEW: Upon re-opening the software, the data from the last session can be restored if it was lost or unsaved for whatever reason. A popup will appear to prompt the user that unsaved data from the last session exists.

v4.7.4 - 14 November 2020

• Some fixes for area loads update speed and frequency.

v4.7.3 - 12 November 2020

• Evaluation Points in settings is now a number field rather than a dropdown and can be manually set by the user to any number they wish between 3 and 50.
• Bug fixes for API results object evaluation points.

v4.7.2 - 09 November 2020

• NEW: Plate Alignment Tool. Align the local axis of a plate to other plates, vectors, nodes or members.
• NEW: Envelope results will now be calculated on a point-by-point basis rather than finding the min/max/abs of a member and using that member's results from the single load combination. The older method will still be available in Settings > Solver.
• Added setting to control whether smoothed diagrams are drawn.

v4.7.1 - 16 October 2020

• NEW: Export Single Member Graph to an Image file.
• NEW: Export Single Member Data to a CSV file.

v4.7.0 - 13 October 2020

• NEW: Improved Rigid Links and Offsets. This includes faster solving and processing of models with a large number of offsets or rigid links.
• NEW: General overall speed improvement for solver (approximately +50% faster solve times).
• NEW: Optionally enable an audio alert to trigger when the solve is finished.
• NEW: Added Vertical Axis setting to SkyCiv Account User Settings so it can be saved for new files if desired.
• View up to 1000 rows in the datasheet at a given time. Use a smaller number of rows if your device cannot handle this amount of data.

v4.6.5 - 23 September 2020

• NEW: Method of Sections for Truss Hand Calculations.

v4.6.4 - 11 September 2020

• NEW: Added kip-in units for moment.

v4.6.3 - 26 August 2020

• NEW: Directional Supports. Define a support so that it acts only in a positive or negative axis direction via the "Direction Code" property of the support.
• NEW: Check all area load variances via Advanced > Check Area Loads Variances.

v4.6.2 - 24 August 2020

• NEW: Displacement Span Limit check method. An alternative calculation method is now available for continuous methods.

v4.6.1 - 18 August 2020

• NEW: Settings > Solver > Only solve user-defined LCs can now be used to completely skip solving individual load groups and load cases. Previously it was only possible to ignore them for the results summary and envelope results.
• Speed improvement with Tension/Compression Member analysis.

v4.6.0 - 09 August 2020

• NEW: Linear Pressures can now be used for loading plate/shell elements. Set the "Load Distribution" to "Linear" when adding a pressure.
• Minor speed improvement when preparing for the analysis of larger models.
• Fixed issue with plate mesh precision.

v4.5.10 - 02 July 2020

• NEW: Groups can be used for filtering analysis results.
• Fixed an issue with load combinations datasheet where some values would be missing from the table.

v4.5.9 - 12 June 2020

• NEW: Space GASS Import and Export method for TXT files.
• NEW: Import STAAD PRO files.

v4.5.8 - 27 May 2020

• NEW: ASCE 7-16 load combinations.
• Improved intersecting members function.

v4.5.7 - 20 May 2020

• NEW: S3D Voice Command. Control S3D using your voice. This can be enabled in Account > Software Settings > Addons.

v4.5.6 - 12 May 2020

• Make Section Designer (GSD) tool more accessible through right-click of member and "Design" top-menu.

v4.5.5 - 28 April 2020

• NEW: Ability to add holes (via a polygon list of nodes) to a plate.
• NEW: Hover over plate results to see their values.
• More improvements to plate solver and plate meshing since v4.5.0.

v4.5.4 - 24 March 2020

• NEW: Ability to toggle visibility of nodes used in plate mesh.
• NEW: Use a physical size for the mesh.
• NEW: Auto-detect or manually select nodes and members within the boundary of the plate so that they are used in the plate mesh.
• Changed mesh options to a draggable container rather than a box blocking the entire screen.

v4.5.3 - 17 March 2020

• NEW: Ability to preview mesh and adjust it more easily, including switching of b & h values for structured meshes.
• More improvements to area loads sensitivity and tolerance issues.

v4.5.2 - 12 March 2020

• NEW: Span members function that will create equally spaced members over a spanned distance.
• NEW: Work from a local file via File > Import > Link Local File. This will constantly scan for changes in a local SkyCiv JSON file and update the model when changes are found.
• NEW: NBCC 2015 load combinations added to load combination importer.

v4.5.1 - 03 March 2020

• Some improvements to area loads internal members detection and reliability.

v4.5.0 - 28 February 2020

• NEW: Improved Plate/Shell Element now implemented resulting in more accurate plate results when unstructured meshes are used.
• NEW: It's now possible top toggle top and bottom plate stress results.
• NEW: Improved mesh algorithms which lead to better quality unstructured meshes.
• NEW: Align plate function which ensures the meshed plate elements are aligned to the local axis of the parent plate (Advanced > Plate Alignment Tool).
• Stay tuned for more improvements in the usability of plates which will come in the next few releases.
• NEW: After selecting graphical elements they can now be filtered using Right-Click > Filter Selection.

v4.4.0 - 13 January 2020

• NEW: Add-ons released for "Detailed Comments", "Bill of Materials" and "Slack Integration". These can be enabled in Account > Software Settings > Addons.
• NEW: Center of Gravity and Total Mass Calculation via UI in Advanced > Center of Gravity.
• NEW: The visibility of the units of result values can now be toggled in the results settings via the "Result Units" checkbox option.

v4.3.4 - 08 January 2020

• NEW: Rotation operation to rotate elements about an axis. Access via Edit > Operation > Rotate.
• NEW: Keyboard shortcut (J) for joining co-linear connected members.
• Fix issue with legend in Shear Force Single Member Diagrams.
• Fix issue with splitting/intersecting members removing loads on those members.
• Adjusted displacement span ratios to be more accurate for members with free-ends and continuous members.

v4.3.3 - 28 November 2019

• NEW: Repeat function can now repeat in the direction along and normal to a member's axis rather than just the global axes.
• NEW: Pen tool now detects vectors of adjacent members to allow members to be extended.
• NEW: Bulk-edit multiple cells in the datasheet via the right-click menu. Replace, add, subtract, multiply and divide all selected cells with a value.
• Click-drag selection box will now detect plates.
• Improvements to multi-edit system including filling common values if they exist, rather than filling blank values for all fields.

v4.3.2 - 14 November 2019

• NEW: Files can now be saved with a comment at the time of saving which can be used for the version history of the file/model.
• NEW: Improvements to Version History including more details about changes to the model, comments and ability to remove revisions.
• NEW: Added shortcut for split member (Use "X" key when any members are selected).
• NEW: Long tap graphical elements on touch-devices to open right-click context menu.
• Fixed some issues with the newer area loads introduced in v4.3.0.
• Default value of load combination factors is now 0 rather than 1.

v4.3.1 - 28 October 2019

• NEW: Ability to search materials database.
• NEW: Automatically design and pick joists from SJI catalogue by setting member type property to "Joist".
• NEW: Ability to import wind loads from the load generator (Area Loads > Load Generator).

v4.3.0 - 18 October 2019

• NEW: Open Structure Area Load which uses the face of the member's shape that is facing the load direction to calculate the loads.
• NEW: Two Way Area loads can now detect inner members and are more reliable.
• NEW: Former One Way (Open and Close) area loads have been deprecated. One Way loads will now calculate loading based on tributary widths.
• NEW: Reminder to save the file after 10 minutes of unsaved changes.
• NEW: Add button to quickly add sections from database within Section menu rather than needing to go into the section builder.
• Column Wind Load type in Area Loads no longer follow absolute vertical distance. Instead the absolute member distance will be used for the loading calculation.

v4.2.2 - 16 September 2019

• NEW: Modal Mass Participation results added to dynamic frequency results.
• NEW: Added ABS, CQC, SRSS load combination types to spectral load groups.
• NEW: Repeat Operation (Edit > Operations > Repeat) can now also duplicate loads.
• NEW: Import DWG (2D Plans) and interact with them easily create structures based on the DWG plan drawing.

v4.2.1 - 10 September 2019

• NEW: Added function for creating a new member from an existing node in any direction. Right-click a node then select Add Relative Member.
• CSV Exporter can now export results from all load combinations in a single export.
• Improve some annoyances with smaller screens.

v4.2.0 - 20 August 2019

• NEW: Welcome screen when starting the software with three options: Open File, Add Template, Upload File.
• NEW: Template Assemblies. Add template assemblies from the library to help speed-up modeling. Click "Assemblies" button in left-menu.
• NEW: Allow math expressions in datasheet cells (e.g. entering "=1+2" in a datasheet cell will evaluate to 3).
• Reaction result arrows will now scale with the scale slider.

v4.1.0 - 06 August 2019

• NEW: Dynamic Frequency Analysis. Use new "Nodal Masses" to create masses at nodes in the model.
• NEW: Response Spectrum (RS) Analysis. Use new "Spectral Loads" to create loads needed for RS analysis.
• NEW: Displacement Span Check in Analysis report.
• NEW: Added settings to ignore individual load cases and load groups when compiling envelope results and the results summary data.
• Removed annoying "Load Previously Saved Results?" alert on file load. Now if results exist then the solve will be bypassed and the previous or existing results will be auto-loaded.
• Fixed issue where " character would be replaced with ' character in job details fields when saving a file.
• Fixed issue with 3D renderer plate results caused by Chrome 75.

v4.0.0 - 24 June 2019

• NEW: Import/Export Revit Models (.rvt files) using File > Import/Export.
• NEW: Improved support symbols for fixed, pinned, roller and spring supports.
• NEW: Hide/Show functionality now available on post-processing results UI and design UI.
• NEW: Added user-editable tolerance inside Repair Model's merge nodes function.

v3.4.4 - 30 May 2019

• NEW: Prestressed Loads for members can now be added in Advanced > Member Prestress Loads.
• NEW: Added an element locator pulse to identify elements in wireframe graphics.
• NEW: Added new loading spinner that includes helpful tips for using the software.
• Added more shape symbols for section legend.

v3.4.3 - 15 May 2019

• NEW: Added "Merge Overlapping Members" to Repair Model function.
• Made some improvements to the vertical Z-axis view setting.
• Fixed issue with ASCE-LRFD and ACI-318 auto-import load combinations omitting "Snow: Roof live" load case factors in some load combinations.

v3.4.2 - 11 May 2019

• NEW: It's now possible for enterprise users to import/export SkyCiv JSON files to their device to act as local file storage using File > Import/Export > SkyCiv File.
• Fixed some issues with Column Wind Load.
• Fixed some issues with Multi-Edit form validation.
• Improved some warnings and checks in the UI relating to duplicate nodes and zero-length members.
• More bug fixes with the last release.

v3.4.1 - 07 May 2019

• NEW: Grouping functionality (Edit > Groups) which allows you to group similar structural elements into a family. This also features "auto-grouping" which automatically detects and groups similar elements for you.
• NEW: Results Summary can be viewed after solving the analysis model. This summarizes results from all load combinations.
• NEW: You can now change the font-size for the graphics in Settings > View > Graphics Font Size.
• Minor bug fixes.

v3.4.0 - 23 April 2019

• NEW: The "Split Members" function in the right-click menu can now split by "intersecting members". Similarly you can right-click a member and intersect it with other members using "Intersect Members".
• NEW: Multiple Self-Weight cases are now available. Each self-weight case will have its own load group (e.g. SW2).
• Improvements to datasheet speed and data processing.
• Fixed graphical issues where plates and members did not deflect with the same scale.
• Fixed issue with removing copied (mirror/repeat) plates. The meshed plates of these plates would not get removed with the parent plate.
• Minor fixes for issues with plate solver.
• Minor bug fixes.

v3.3.9 - 10 April 2019

• Collapsed model view and rotation buttons into "Views" and "Rotate" buttons in the right-bar.
• Added "Do not show this message again" checkbox to Multi-edit confirmation popup.
• Minor bug fixes.

v3.3.8 - 02 April 2019

• NEW: Added a "Join Members" function to right-click menu when several co-linear and connected members are selected.
• Improved mouse center zoom accuracy.
• Improved data validation issues with area loads inputs. Fixed issue with changing nodes/members associated with area loads that would cause the model to not update correctly.
• Fixed issue where "Additional Data" of materials would be removed if materials datasheet was used. Editing of Materials is now disabled through the datasheet.
• Fixed issue with zero magnitude label for "Column Wind Load" area loads.
• Minor bug fixes.

v3.3.7 - 18 March 2019

• NEW: Added AS1720 (Australian Timber) to the member design module in beta-stage development.
• NEW: Added ability to reset design data inside the member design module rather than always using saved data when the module loads.
• NEW: Added Canadian code (CSA A23.3-14) for RC Design.
• Fixed issue introduced in v3.3.5 which caused the model to disappear in the 3D renderer occasionally.

v3.3.6 - 11 March 2019

• NEW: DXF Import will now assign section IDs to imported members via the DXF layer.
• NEW: Added checkbox option ("Clear previous data on import") which provides an option to clear entire structure upon importing DXF or CSV files.
• NEW: Added "Mouse" options to "Settings" to control for mouse sensitivity of rotating, panning and zooming.
• Fixed issue with bottom error info bar that could flash red for a very long time if repair model failed.
• Fixed orientation issue when importing a DXF file while using vertical Z-axis in SkyCiv modeling.
• Increased number of search results of Section IDs when using left-menu for members.
• Improved clicking accuracy when selecting members that are close together.
• Improved "Repair Model" function to prevent it repeating tasks multiple times. Also tightened the tolerance on the function which splits members by intersecting nodes.

v3.3.5 - 04 March 2019

• NEW: Share your model with the world using the public viewer: File > Share > Public Viewer Link
• NEW: Give a material a class like "Steel", "Aluminium" etc.
• 3D Renderer now opens much quicker than previously. It will open instantly after it has been opened once.
• Decreased the "Initializing" time when solving by around 30-40%. It is more noticeable on larger models.
• Fixed issue with 3D renderer getting stuck when looking at results of structures with removed tension/compression only members.
• Fixed node coordinates rounding/precision issue when using some operations.

v3.3.4 - 15 February 2019

• NEW: "Scale Nodes" operation to increase or decrease node coordinates about a center point. Use it via Edit > Operations > Move Nodes.
• Fixed major units conversion issue with area loads magnitudes and unit selections that were not default units within Metric or Imperial system.

v3.3.3 - 08 February 2019

• NEW: "Version History" now replaces the old "Manage Previous Versions". Preview your previous versions to see how your model has changed over time and choose whether to restore it to a previous version. Access it via File > Version History.

v3.3.2 - 04 February 2019

• NEW: Global Z-axis can now be selected as the vertical axis in Settings > View > Vertical Axis. Toggle between Y-axis and Z-axis as the vertical axis.

v3.3.1 - 24 January 2019

• NEW: Change the colors associated with sections in wireframe and 3D renderer via the "Renderer Color" section property.
• NEW: "Shift Nodes" operation added. Select multiple nodes and move them along an axis in Edit > Operations > Shift Nodes.
• NEW: "Measure Tool" added to measure distances between nodes in Advanced > Measure Tool.
• NEW: Shear Area properties of sections for the use of Timoshenko beams can now be auto-filled from the section builder if the values exist. This saves the user from manually entering the shear area fields when using Timoshenko members.
• NEW: Hovering over nodes displays coordinates in bottom bar. Hovering over members displays length in bottom bar.
• Fixed issue with "Repair Model" function repairing all issues rather than the issues only selected by the user.
• Notify user that tapping ESC key will hide the loading screen overlay if it happens to get stuck for more than 10 seconds.
• Moved Advanced > Operations to the Edit top menu.

v3.3.0 - 11 January 2019

• NEW: 3D shapes of members can be viewed in wireframe graphics via Visibility Settings ( icon) > 3D Members. This makes it easier to view the orientation of the members in 3D space and the direction that loads are applied to the member.
• NEW: Zooming the wireframe model now zooms into the position of the mouse rather than the center of the screen.
• Fixed issue where column area loads in the model would cause the Analysis Report PDF to have blank images.

v3.2.2 - 05 December 2018

• NEW: Mirror Operation (Advanced → Operations). This is a true mirror/reflection operation rather than a simple repeat as done previously.
• NEW: Clicking a table row in the Member Design results table will now isolate that member's results in the graphics.

v3.2.1 - 23 November 2018

• Fixed issue where you would have to sometimes use 'Undo' twice to undo the meshing of a plate. This could sometimes lead to a double meshed plate if undo was only run once and then the plate was re-meshed.
• Fixed issue where member would sometimes not rotate correctly in the 3D renderer when the member was rotated from within the section builder.

v3.2.0 - 13 November 2018

• NEW: Tension and Compression Members are now available. Change the "Type" field in the member properties. A tension/compression limit can also be attributed to the member.
• NEW: Left-menu can be resized by click-dragging its border.
• NEW: Graphical elements will glow on hover making it more responsive to click/select them.
• NEW: Column wind load is now available as a new type of area load via Area Loads > Type: Column Wind Load. It allows you to select a plane (by nodes) and then generate stepped distributed loads from stepped pressures that vary with elevation onto your columns in the plane.
• NEW: Material ID and Section ID fields in the left-menu are now searchable, displaying a text description rather than just an ID number.
• NEW: Add new materials directly from the Section Builder.
• NEW: Most database sections added from the Section Builder now load a default material (e.g. A992 material will automatically load with an AISC W-Shape).
• NEW: Quickly add sections above the Section ID field in the left-menu for a member by clicking the '+' icon.
• NEW: Access information about the solution after solving via Advanced > Solution Info.
• NEW: Summary of keyboard shortcuts and general tips in Help > S3D Shortcuts & Tips.
• NEW: Create simulated inclined roller supports. Right-click a node then select Add Inclined Support.

v3.1.3 - 02 November 2018

• NEW: Added a new option for the buckling solver which allows the use of the Parabolic Johnson Formula.
• NEW: Critical Buckling Stress is now automatically calculated and can be viewed in the UI post-solving or the Analysis Report.
• NEW: It's also now possible to view the Critical Buckling Load in the UI after solving.
• Fixed issue created in v3.1.0 due to to new unit options where buckling loads and effective lengths were incorrect if default metric or imperial units were not used.
• Fixed issue with trying to enter RC design module when invalid members/sections found that aren't compatible with the RC module.
• Fixed issue with 3D renderer not working in some unsupported browsers like Internet Explorer.

v3.1.2 - 24 October 2018

• NEW: Integrated NDS 2018 ASD/LRFD Member Design code into the software.
• NEW: Math expressions can now be entered into the left menu input fields.
• NEW: The data of the integrated member design modules will now be saved along with the structural model file.
• NEW: Tapping ESC key will hide the loading screen overlay if it happens to get stuck.
• NEW: Export directly to the SkyCiv API from S3D using File > Export > Direct to SkyCiv API.
• NEW: Beta release of API Scripts. Use JavaScript to build your structure in Advanced > API Scripts.
• Splitting a member will now correctly split any member loads that belong to the original member and assign them to newly created members.
• Fixed some issues when exporting CSV data of results that do not exist.

v3.1.1 - 09 October 2018

• NEW: Integrated Reinforced Concrete (RC) Beam/Column Design (ACI 318, Eurocode 2 and AS3600) into the software.
• NEW: Integrated Connection Design (AISC 360-10) into the software.
• The integrated member design modules can now handle any combination of units the user has selected, rather than only the default metric/imperial selections.
• Fixed issue where fillet dimension of sections was not getting converted when the units changed for the structural model.
• Fixed issue where only changing load cases after already solving would not trigger a new solve.

v3.1.0 - 24 September 2018

• NEW: More units are now available rather than simple choosing 'Metric' and 'Imperial'. For example, 'mm' or 'in' can now be used for node coordinates rather than being locked to 'm' or 'ft'.
• NEW: Analysis results for each load group are now available when solving (along with previously added load cases and envelope cases).
• NEW: New functions for splitting members. Right click a member and click "Split Members" for multiple options including: splitting by number of divisions, split by intersecting nodes, and split by percentage.
• NEW: Draw tool can now be used to snap directly to a member.
• NEW: New function that pulls in selected elements into input fields. For instance, when applying supports to nodes, you can highlight the nodes you want to add a support to, then click into the input box for "Node IDs" and they will be added.
• NEW: Integrated the new Materials Database. It can be accessed from Materials > Database button.
• NEW: 3D Pin Support icon (FFFRRR).
• NEW: Moving the graphical select box (CTRL + drag) in the reverse direction only selects elements that are entirely within the selection area.
• NEW: All "Continuous" members can be converted to split "Normal" members with one click within the "Advanced > Repair Model" toolbox.
• Fixed issue with the mass figure quoted in the Analysis Report Bill of Materials (BOM) of imperial plates.
• Default sign convention of bending moment diagrams has been reversed as it seems more conventional and common in this new way: For a horizontal member taking a UDL, the moment is a "U" shape with moment values below the horizontal as positive and values above the horizontal as negative.
• Increase default solver timeout to 10 minutes. Added more options for solver timeouts.
• Fix issue with where graphical select box (CTRL + drag) would select anything within itself even after being made smaller.
• Fixed issue with pen tool when drawing with reference nodes not on major axis.
• Changed the default number of evaluation points to 9 (an odd number) so that the middle point of each member is evaluated by default.
• Fixed issue with difficult datasheet scrollbars. Made the scrollbars easier to use by making them wider and lighter.

v3.0.2 - 06 August 2018

• NEW: Guided walkthrough to help first-time users. It can be accessed from Help > S3D Tour.
• Fixed issue with 3D Renderer screenshots printing the word "normal" all over the screen in Google Chrome.

v3.0.1 - 29 June 2018

• NEW: Improved progress bar when solving.
• NEW: Tapping ESC key unselects all.
• Fixed issues with default tool and snap getting stuck on.
• Fixed issue where plates could not be hidden.
• Fixed issue with right-clicking while holding the CTRL key.
• Fixed issue with clicking/selecting multiple plates.
• Fixed issue with not being able to unselect items that are highlighted.
• Fixed issue where mis-clicking an item loses current highlight selection.
• Fixed issues where it was not possibly to unselect items that were already selected.
• Fixed issue with some operations not working due to v3.0.0 release.

v3.0.0 - 20 June 2018

• NEW: Envelope cases (min, max and absolute) added to load combination results.
• NEW: Assign load cases from a design code to load groups. These are solved as primary load cases in the load combination results.
• NEW: Drawing tools, including Pen tool to draw members, Grab tool to move elements and additional features added to the default mouse tool.
• NEW: Snapping features that allow the user to track mouse along a global axis from a reference node. Can snap to member midpoint and connect members or add nodes while using pen tool.
• NEW: Grid function allows users to define a grid plane and add nodes to the intersections of the grid. Grids can be added to XZ, XY and YZ, by user defined dimensions.
• NEW: Smart functions: Intersect members, merge close nodes and repair overlapping members by highlighting and right clicking.
• NEW: Keyboard shortcuts for selection: Select All (Ctrl + A), Inverse selection (Ctrl + I)
• NEW: Hide function can be used to hide elements for larger structures. Simply highlight and right click the elements to hide them.
• Fixed a bug where spring supports would not be considered in the linear buckling analysis.
• Graphic upgrades: Highlight color changed to light blue, bug fixed with distribute load selection, member thickness reduced, text labels font reduced.

v2.3.1 - 17 May 2018

• NEW: Results Settings can be controlled to show limit states against a custom value or the strength of the material (yield or ultimate).
• NEW: The deflection limit can be toggled in the Displacement results. Click Displacement > Span to toggle this result.
• NEW: Minimum and Maximum Results are now displayed in the top-left corner for member results in wireframe mode.
• NEW: It is now possible to change the background color of the graphics to white in Settings > View.
• Adjusted the size of the local axes drawn on the members in wireframe mode. They should now be easier to view when zooming in.
• Fixed issue with DXF importer always detecting metric units of the structure.

v2.3.0 - February 2018

• NEW: Moved software to a new platform (platform.skyciv.com). Appearance of software UI may be slightly changed.
• NEW: Ability to control the of highlighting minimum/maximum values in the Analysis Report.
• Fixed a bug where BMD values would show the incorrect sign despite the graph direction being correct.

v2.2.6 - 15 November 2017

• NEW: Rigid Members. Select "Rigid Link" as the "Type" in the member properties.
• Fixed a plate stiffness issue when the model contained only plates and no members.
• Fixed a validation issue with the dropdown values of datasheets.

v2.2.5 - 03 November 2017

• Fixed issue where normal members would sometimes not be split by "Repair Model" function due to the introduction of Continuous Members.
• Fixed some plate orientation issues where local axes of the plate could not be found and hence the plate would not appear in the 3D renderer.
• Fixed an issue where toggling the visibility settings would take an extremely long time on large models.
• Fixed a positioning issue where the right-click context menu would not be visible around the edges of the screen.

v2.2.4 - 25 October 2017

• Fixed issue where plate results would overlap member results when toggled at the same time.
• You can now split a member within the right-click menu.
• Fixed some issues with the new Area Loads.

v2.2.3 - 12 October 2017

• Improved the importing of nodes and members from CSV. It will now automatically remove duplicate members and merge any duplicate nodes imported.
• Improved the importing of DXF Files. You can now specify a scaling factor so that the units of the DXF file can be accounted for during the import. It will now automatically remove duplicate members and merge any duplicate nodes imported.
• Fixed issue with right-click menu on Chrome.

v2.2.2 - 3 October 2017

• NEW: Area Loads (One-Way and Two-Way)
• NEW: Context (Right-Click) Menu. Right-Click items graphically to do operations to them.
• NEW: "Proportional Load Scale" visibility option. Enable/disable this option from the visibility settings to control whether you want to draw load magnitudes in proportion to each other.
• Improved the speed of Datasheet Entry (especially the members datasheet).
• Added Torsion and Torsion Stress member result toggle to 3D Renderer.
• Creating members with the mouse will not automatically use the most recent section ID used to create a member (rather than always using Section ID 1).
• Fixed various bugs with "Multi Edit" feature.

v2.2.1 - 11 September 2017

• NEW: SkyCiv Eurocode 3 Design Code integrated into S3D.
• NEW: K_y and K_z factors will automatically be set by the software in the design interface. Previously these factors were set at 1.0 by default.

v2.2.1 - 30 August 2017

• Fixed a bug in the Integrated Design UI where the members design table would not fit in the container on Internet Explorer.
• Fixed a bug where jumping from Model to Design UI would not show the "grey" loading overlay when solving before design was entered.
• Fixed a bug where the model data would sometimes fail to update after the design UI was opened.
• Fixed a bug in the Integrated Design UI where a change in the model would not alert the user that the design needed to be re-checked.
• Fixed bugs introduced in v2.2.0.

v2.2.0 - 23 August 2017

• NEW: Continuous Members. When creating a member you can specify it to be "Continuous" which means that it automatically connects to any nodes it passes through.
• NEW: Multi Edit function. Graphically select multiple things and then click the left menu to bulk-edit them. This allows you to edit multiple things in bulk.
• NEW: Repeat Operation (Advanced → Operations).
• NEW: Curved Members (Advanced → Operations).
• NEW: Spiral Members (Advanced → Operations).
• NEW: Unit Conversion Function between Metric and Imperial. Tick on "Convert Structure Data" in Settings when changing units and your model values will be converted.
• NEW: Models with spring supports can now be solved with non-linear analysis (previously only linear analysis allowed).
• NEW: "Auto Stabilize Model" setting (in Solver Settings) can be enabled to help models solve and converge (especially for non-linear analysis).
• NEW: "Auto Repair Model" setting (in Solver Settings) can be disabled to avoid automatically running "Repair Model" function before solving.
• NEW: Truss Hand Calculations available for 2D (XY-plane) structures made entirely of truss members. Click the red "Truss Hand Calcs" button after solving to get access.
• "Repair Model" tool has been overhauled. You can now choose which type of repairs to check and fix. More repairs have been added.
• Fixed bug where 3D Renderer screenshot would not work.

v2.1.1 - 6 July 2017

• NEW: Catenary Cable Analysis is now available. Select "Cable" when creating a member (Advanced UI) to use a cable.
• NEW: Hand calculations available for section calculations on a number of shapes.
• NEW: Changing the section can now be performed from within Section Builder.
• Fixed an issue in 3D Renderer where asymmetric sections may have been mirrored about its local y-axis. This was a visualization error rather than a solving error.
• Improvements and bug fixes for the Analysis Reports introduced in v2.1.0.
• Fixed issue where point loads and distributed loads tables were not being shown in the "Job Setup" section of the Analysis Reports.
• Non-linear convergence setting can now be set as low as 0.1%.

v2.1.0 - 1 June 2017

• NEW: Multiple Load Combinations can now be solved.
• NEW: Load Combinations for American, European, Canadian and Australian Design Codes can be auto-generated using the "Import" button within "Load Combos".
• NEW: Integrated Design Modules (AISC ASD and DNV are the first codes implemented).
• NEW: Advanced Non-Linear and P-Delta Analysis. You can now choose either Small or Finite Displacement Theory.
• NEW: Analysis Report. The reports have been overhauled. Report contents are much more customizable and there is now control for the precision of numbers/results. There is also control for selecting which load combinations to include in the report. Reports are also generated server-side rather than client side meaning that any device can now generate reports. You can also preview reports before downloading them.
• NEW: Plate results added to the analysis reports.
• NEW: Structures with plates can now be exported as STL files.
• NEW: The results of your most recent solves are stored with your files so that if you open a file, you have access to the results without having to solve again.
• NEW: If you solve your structure and then re-visit your model without making any changes then you do not need to re-solve the model to view the results again.
• NEW: Restore and manage previous versions of your files. Access this in "File" → "Manage Previous Versions".
• NEW: Timoshenko Beam Elements can now be solved by specifying shear areas for the section properties (found in Advanced fields).
• NEW: User Interface has changed to better suit the modeling, analysis and design phases. Buttons to perform actions such as solving are now in the top-right of screen.
• Improved solve time on large structures as reporting data is now only generated when requested rather than through every solve.
• Improved Non-Linear and P-Delta Analysis, including a different convergence specification (in Settings). Now based on relative error rather than absolute convergence error.
• Fixed a bug where the "Accurate Buckling Shape" setting which would sometimes fail in a buckling analysis.
• Fixed a bug involving Buckling Analysis and Plates.
• Fixed issue with the number precision on the single member graphs which may have caused strange looking graphs.
• Fixed an issue with spring supports that was introduced in v2.0.2.
• Fixed issue with the 3D renderer where the sky would randomly disappear.
• More improvements to the CSV Result Exporter.
• Various minor bug fixes.

v2.0.3 - 15 February 2017

• NEW: Integrated the new Documentation into the user interface for easy access.
• NEW: Added Plates to Bill of Materials in the analysis report.
• Various improvements to the CSV Result Exporter from v2.0.2.
• Fixed an issue with plates where erroneous results would be solved when adjacent plates were not aligned properly. The solver now attempts to automatically align plate normals if the user hasn't done so themselves.
• Fixed some issues with plate self-weights and pressures. If working in 'Imperial' units, plate pressures are now expected in 'ksf' units as it is a much more user-friendly unit than 'ksi'.
• Changed the TENSION/COMPRESSION color convention in the simplified axial diagram as many users were getting confused. Now RED (inward arrows) means the member is in compression while GREEN (outward arrows) is when the member is in tension.

v2.0.2 - 12 January 2017

• NEW: View table(s) of results and export to CSV (access in "Output" → "CSV Results") after solving.
• Various improvements to the datasheet including a bug fix where large sets of data (more than 1000 rows) could not be viewed. The datasheet will now have pages when the list becomes too large.
• You can now solve unmeshed plates if they have only 3 or 4 nodes.
• Section names now show up in S3D. Sections made up of database shapes only will use the database name. Others will use the height x width to name the section.
• Fixed various bugs after the 2.0.0 release.

v2.0.1 - 21 November 2016

• NEW: Added more mesh parameters to control structured quad plate meshes.
• Fixed issue with plates results scale.
• Fixed issues with some plate results and result units.
• Changed plate pressure unit for metric system to kPa (previously MPa). Old files created after v2.0.0 should automatically be adjusted for these changes.
• Fixed various bugs after the 2.0.0 release.

v2.0.0 - 18 November 2016

• NEW: Plates added. Model slabs, walls, tanks etc. Create plates by clicking between nodes or simply list nodes and then mesh them before solving. The plate solver uses shell elements which means there is both membrane (shell) and bending (plate) components.
• NEW: Pressures can be added to load plates either in local plate axes or the global axes.
• NEW: Member and Plate Offsets have been added. This allows you to create rigid connections and connect members/plates that do not meet at their centrelines. These offsets are local to the member/plate.
• NEW: Interactive and fully integrated 3D Renderer. The new 3D Renderer is more integrated in the software and can even be used to build and edit the model. Visibility settings have also been improved for the 3D Renderer (e.g. you can now make members/plates transparent and view nodes).
• NEW: Advanced User Interface (UI) switch has been added to many of the left menus to hide the complex fields that only get used by advanced users.
• NEW: Applying loads and supports to multiple nodes/members/plates can easily be achieved by listing them as comma separated or as ranges (e.g. 1-3 or 1,2,3 or all).
• NEW: Visibility Settings moved to the right view controller for easier and quicker access.
• NEW: Add distributed loads in the local member axes instead of just the global axes.
• NEW: Integrated the new SkyCiv Section Builder (SB) which supersedes the old section builder.
• NEW: Solver speed improved by around 600%.
• NEW: Faster buckling analysis, however this leads to a poorer buckling shape. Click 'Settings' → 'Accurate Buckling Shape' to solve a more accurate shape which will solve in the same time as previous versions.
• NEW: Graphical speed and responsiveness improved for larger structures.
• NEW: Improvements to the 'Repair Model' tool including a warning if a large structure has been detected due to entering incorrect units (e.g. entering node coordinates in millimetres when the software is expecting metres). Additionally a default section will be added if the user forgets to add one (useful for students who do not know the sections of their structure but just want reactions, shear, bending and axial results).
• NEW: 'Materials' have been separated from 'Sections' and must be defined outside of the section builder. However, these materials can be used within the section builder. This suits the new plates and composite sections. Old files created before v2.0.0 should automatically be adjusted for these changes.
• NEW: Files can now be auto-saved (activate this from your 'Account Settings' → 'User Settings' → 'File Manager Settings' → 'Autosave Files'.
• NEW: Warnings are now shown if you attempt to exit the software without saving your work first. Also a '*' symbol will be displayed next to your filename while you're working if you have unsaved changes.
• NEW: 'Clear All' button for datasheet can be used to fully clear a datasheet.
• Fixed bug in PDF and TXT reports where the min/max stresses were not being highlighted.
• Improvements to torsion stress and shear stress calculations (now based on shear area), as well as stress of asymmetric sections courtesy of the new SB.
• 'Settlements' moved from the left-menu to the top-menu under the 'Advanced' menu. The can also be accessed from with the 'Supports' left-menu.

v1.2.5 - 11 August 2016

• NEW: Customizable PDF Reporting with easy-to-use interface. Get the perfect layout for your reports! Click "Analysis Report" after solving your model.
• NEW: "Repair Model" function added to "Edit" menu. This replaces the old "Job Cleanup" function. It will automatically run on solve to check the model for any problems.
• The "Auto-zoom" tickbox in "Settings" has been removed. Models will only auto-zoom when something out-of-view changes.

v1.2.4 - 27 May 2016

• NEW: Perspective View Projection added (in Settings).
• Improved view controls (zoom, pan and rotate).
• Improved graphics speed.
• Improved scale for viewing loads/diagrams.
• Minor bug fixes.

v1.2.3 - 16 May 2016

• NEW: Spring Supports have been added.
• NEW: Support Settlements (Prescribed Nodal Displacements) are now possible.
• NEW: Section Legend.
• NEW: Section Names can now be attributed to sections for easy identification.
• NEW: Analyse the structure with Timoshenko or Euler-Bernoulli Elements.
• PDF Text Analysis Report has been improved with more section information added.
• Entity IDs now start at 1 rather than 0 by default.
• Fixed bug where the units of the material properties were not showing in the section builder.
• Minor bug fixes.

v1.2.2 - 02 May 2016

• NEW: Import DXF Files.
• NEW: Export Model to DXF as 2D Plans or 3D Lines.
• NEW: Export 3D Models (CAD) to STP.
• 3D Renderer opens within the UI rather than in a new window/tab.
• NEW: "Job Cleanup" Function in the top Edit menu.
• Minor bug fixes.

v1.2.1 - 22 April 2016

• NEW: P-Delta Non-Linear Analysis can now be performed.
• Improved buckling analysis including more accurate buckling shapes.
• NEW: Smoother results diagrams.
• Ability to move labels via click and drag.
• Minor bug fixes.

v1.2.0 - 01 April 2016

• NEW: New and Upgraded Graphics - more optimised and responsive especially for larger structures.
• NEW: Faster solving times.
• NEW: Mouse interaction with graphics for adding/editing.
• NEW: Keyboard shortcuts added.
• NEW: New analysis report with screenshots - now can save to PDF report.
• Fixed 3D renderer for Internet Explorer.
• Added screenshot function to 3D Renderer.
• NEW: Camera Roll which stores screenshots in your account.
• NEW: Files now have thumbnails.
• NEW: Combined Axial + Bending Stress computation for stress analysis.
• NEW: Stress calculations for rotated members, including angle and channel sections.
• Minor bug fixes.

v1.1.4 - 13 February 2016

• NEW: Now possible to 'Save' rather than just 'Save As'.
• Minor bug fixes.

v1.1.3 - 02 February 2016

• Fixed various datasheet bugs - using datasheet for sections would remove all section dimensions.
• NEW: Datasheet sorting function can now sort rows.
• Fixed "Auto Zoom" setting.
• Fixed 3D Renderer view button bugs.
• Minor bug fixes.

v1.1.2 - 17 December 2015

• Fixed Single Member function bug where some members would fail to show diagrams/results.
• Minor bug fixes.
• NEW: File Manager for saving and opening files.

v1.1.1 - 28 October 2015

• NEW: Linear buckling analysis can now be performed!
• NEW: Section Database. Section builder now can import standard sections from America, Australia, Europe and Britain.
• NEW: Channel Sections added.
• NEW: Ability to save sections.
• NEW: Files can be saved with "Job Details".
• Minor bug fixes.

v1.1.0 - 03 October 2015

• Datasheet entry for inputs is now off beta mode.
• NEW: Now possible to add loads along a member rather than only at a node.
• NEW: Self Weight, Load Groups and Load Combinations have been added.
• Fixed 3D render default section when imperial units selected.
• Fixed 3D render occasional rotation bug of members when a result selected.
• Bug fixes relating to incorrect node displacements shown for complex member end fixities/connections.
• All settings now save with files.

v1.0.3 - 24 June 2015

• NEW: Stress analysis has been added.
• NEW: 3D Render displays results with color scaling contours.
• Improved solving speeds.
• NEW: Datasheet entry now available for inputs (BETA).

v1.0.2 - 28 May 2015

• Upgraded user interface. All users have new navigation bars and side menu.
• Improved solve and processing speeds.
• Improved drawing and user interface speeds.

v1.0.1 - 15 May 2015

• NEW: Dynamic section builder is now available. Section Radii/Fillets also available.
• NEW: Import from CSV. Nodes and Members can now be imported from a CSV or text file.
• Structural 3D users may have had issues accessing SkyCiv Beam, Truss and Frame. This has now been fixed.
• Non "FFFFFF" Member End Fixities may not have been working properly in some cases. This has been rectified.

v1.0.0 - 12 May 2015

• Released.

October 2026

	Added geometric-axis DSM Factors (fo,l,c, fo,d,c, fo,l,bx, fo,d,bx, fo,l,by & fo,d,by) to Australian Standard (AS) Cold Formed Steel Z sections for Lysaght, Metroll, Millform, Steeline, Stramit and Stratco.
	Added Metric > Steel > European Standard (EN) > EN 10346:2015 > S220GD - S550GD & HX160YD - HX500LAD materials.
	Added Metric > Steel > European Standard (EN) > EN 10210-1:2006 > Non-alloy (Table A.3) & Fine grain (Table B.3) structural steel materials, replacing EN 10210-1:1994.
	Fixed Shear Modulus (G) value for EN 1993-1-1, EN 1993-1-12 and ETA-10/0156 (ArcelorMittal HISTAR) steel materials.
	Updated EN 10219-1:2006 S275J0H, S275J2H, S355J0H, S355J2H & S355K2H Ultimate Strength (Fu) values to the conservative 3mm - 40mm thickness range.
	Added Cold-Formed manufacture process to EN 10219-1 steel materials.
	Material manufacture process is now supported in the material database properties.
	Removed EN 10025:1990+A1:1993 materials, which are superseded by EN 10025-2:2004 and EN 10025-2:2019.
	Corrected material labels: EN 10222-2:2017 P235G to P235GH, and EN 1993-1-1 S 420 NH/NHL to S 420 NH/NLH.

23 September 2026

	In the FSM tool, a bug was fixed with the calculations of hat shapes without lips.
	In the FSM tool, a bug was fixed with the wrong axis in the y-axis stress diagram for hat shapes.

September 2026

	Added Canadian > Cold Formed Steel (ExSteel) C & Z sections with DSM Factors.
	Grouped Metric > Steel > European Standard (EN) materials into parent standard families.
	Added description to each European Steel Standard (EN) materials standard label.

August 2026

	Added Canadian > Cold Formed Steel (BEHLEN) C & Z sections with DSM Factors.
	Added Canadian > Cold Formed Steel (CEMCO) Hat Furring Channel, Stud, Track & U-Channel sections with DSM Factors.
	Added Canadian > Cold Formed Steel (ClarkDietrich) Furring Channel, Stud, Track & U-Channel sections with DSM Factors.
	Added Canadian > Cold Formed Steel (MarinoWARE) CR Channel, Stud & Track sections with DSM Factors.
	Added Canadian > Cold Formed Steel (Purlin Mill) Cees, Double Channels, Non-Standard Cees, Non-Standard Zees & Zees sections with DSM Factors.
	Added Canadian > Cold Formed Steel (SUPREME) Furring Channel (F) & Track (SFT) sections with DSM Factors.

July 2026

	Added "product" key for Aluminium materials: ADM and EN 1991-1.
	Added Metric > Concrete > NZS 3101 > Concrete 20, 25, 32, 40, 50, 65, 80 & 100 materials.
	Added Canadian > CSSBI > Stud, Joist, Track, Furring Channel & U-Channel sections with DSM Factors.
	Merged AS/NZS 1720 > FuturebuildLVL and NelsonPineLVL flat and edge definitions into a single material with separate strength properties.
	Added "(Obsolete)" tag to Canadian > CSSBI > Unperforated Studs, Perforated Studs, Unperforated Joists, Perforated Joists & Bridging Channels sections.
	Removed the thickness range key from EN 1999-1-1:2007 (Non-Welded & Welded) materials.
	Removed the thickness range key from EN 1999-1-1:2023 (Non-Welded & Welded) materials.
	Removed the thickness range key from ADM (Non-Welded & Welded) materials.
	Removed the thickness range key from AS/NZS Steel materials.

June 2026

	Improved dimension placement and styling in graphics.
	Materials with defined plate strength now automatically assign Yield (Fy) and Ultimate (Fu) strengths based on element thickness.
	AS/NZS Steel materials now automatically determine Yield (Fy) and Ultimate (Fu) strengths based on section element thickness where applicable.
	EN Steel materials now automatically determine Yield (Fy) and Ultimate (Fu) strengths based on section element thickness where applicable.
	Improvements to Material Import, including a side-by-side preview of the property value table.
	Removed metric materials under the Imperial unit system dropdown.
	Fixed an issue causing dimension inputs to become unclickable when overlapping shapes.

15 May 2026

Choose to ignore parts of a shape when they're in tension when calculating the bending capacity (i.e. the material on the negative side of the PNA will be ignored). This is controlled via two checkboxes (labelled "Ignore parts in tension") in the material properties for the shape. This feature is only available in standalone section builder.

May 2026

	Added Metric > Wood > NZS 1720 material support.
	Added Metric > Wood > NZS 1720 > Glulam > Prolam > PL 8 & PL 12 materials.
	Added Metric > Wood > NZS 1720 > LVL > NelsonPineLVL > NP Frame LVL 8, 11 & 13 materials.
	Added Metric > Wood > NZS 1720 > Sawn Timber > No.1 Framing, SG6 - 15 materials.

02 April 2026

	If the input data has not changed since the last calculation run, the previous results will immediately re-appear. Previously it would go to the solver for re-calculation regardless.
	You can now close the Choose Base Material dialog to cancel the calculation run.

April 2026

	Updated American > AISC > WT Shapes to the 16th edition.
	Updated CSA G40.21 material properties.
	Added New Zealand > Timber (NelsonPineLVL) > NP Frame LVL 11 & 13 sections.
	Added radius of gyration (ry & rz) values to American > AISC > WT Shapes.
	Added New Zealand > Cold Formed Steel (Metalcraft) > MSS Purlins with DSM Factors.
	Added Metric > Steel > European Standard (EN) > 35+ NEW Standards and 330+ NEW Grades. Full list of NEW EN Standards EN 1993-1-1:2005-05 EN 1993-1-12:2007-02 EN 10025:1990+A1:1993 EN 10025-2:2004 EN 10025-2:2019 EN 10025-3:2019 EN 10025-4:2019 EN 10025-5:2019 EN 10025-6:2019 EN 10028-2:2017 EN 10028-3:2017 EN 10028-4:2017 EN 10028-5:2017 EN 10028-6:2017 EN 10149-2:2013 EN 10149-3:2013 EN 10216-2:2013+A1:2019 EN 10217-2:2019 EN 10217-3:2019 EN 10217-5:2019 EN 10219-1:2006 EN 10222-2:2017 EN 10222-3:2017 EN 10222-4:2017 EN 10346:2015 EN 13480-3:2013 ETA-10/0156 (ArcelorMittal) TaEN 10210-1:1994-09

March 2026

	Added American > Cold Formed Steel (Purlin Mill) > Cees, Double Channels, Non-Standard Cees, Non-Standard Zees & Zees with DSM Factors.
	Updated Centroid (Cz & Cy) values for European > Cold Formed Steel (Ruukki) > Purlin Z > Z350 sections.

25 February 2026

	Added a button to export the results table to Excel. You can find it under Results > Analysis Tools > Copy Results to Clipboard.
	The torsional warping constant (Iw) is now being imported as zero for Australian steel hollow sections and angles. Previously, the Iw value was not being imported.
	The Shapes list in the bottom-right of the graphics window is now smaller to provide more display space. It will expand vertically as more shapes are added, reducing the need for scrolling.
	Solids that are free-floating inside a cutout will now trigger a warning indicating potentially inaccurate shear/torsion results. Previously, this condition was not detected.
	Detection of touching shapes has been improved for cases where a solid is enclosed within a cutout.
	A graphical issue has been fixed where the Plot PNA and Plot Shear Center buttons plotted points relative to the untransformed centroid instead of the transformed centroid. This primarily affected composite material sections. The values in the results table were correct.

January 2026

Updated Torsion (J) and Warping (Iw) constants for Mexican > Cold Formed Steel sections.

December 2025

	Added New Zealand > Structural Steel > Circular Hollow Sections, Universal Beam Tees, Universal Column Tees, Welded Beams and Welded Columns.
	Renamed square sections under Singaporean > Steel (Consteel) > Metric Beams & Columns from MB to MC.
	Updated DSM Factors for the following hat sections: American > Cold Formed Steel (CEMCO) > Hat Furring Channel American > Cold Formed Steel (ClarkDietrich) > Furring Channel American > Cold Formed Steel (SSMA) > Furring Channel (F) Australian > Cold Formed Steel (Lysaght) > Topspan (Hat) Australian > Cold Formed Steel (Metroll) > Top Hats Australian > Cold Formed Steel (Stramit) > Batten & Top Hat New Zealand > Cold Formed Steel (Metalcraft) > MS Tophats & MS Tophats (Lipped)

13 November 2025

	Now using more precise points for shapes with more than one polygon (e.g. hollow rectangular or double angles) as it provides slightly more accurate results.
	Due to the point above, this fixed a rare issue where some hollow rectangular sections had 45 degree alpha value instead of 0 degrees.
	The color when hovering over a shape has been changed to a light yellow.
	Clicking blank space in the graphics or using ESC key will de-select the current shape.
	Added an edit menu to the top menu for undo/redo and clear. This makes it more consistent with other SkyCiv software.

November 2025

	Added Canadian > CISC > HSS A500-C: Rectangular, Square and Round sections.
	Added radius of gyration (ry & rz) and elastic section moduli values (Szt, Szb, Syt & Syb) to all Canadian > CISC > HSS G40.21-C sections.
	Added Metric > Wood > AS 1720 > Wesbeam > e-beam LVL material.
	Updated EN 1999-1-1 (Welded & Non-Welded) Poisson's Ratio (v) value.
	Renamed Canadian > CISC > HSS to HSS G40.21-C.
	Updated EN 1999-1-1 (Welded & Non-Welded) Poisson's Ratio (v) value.

October 2025

	Added American > Cold Formed Steel (ClarkDietrich) > Furring Channel, Stud, Track & U-Channel with DSM Factors.
	Added American > Cold Formed Steel (MarinoWARE) > CR Channel, Stud & Track with DSM Factors.
	Added American > Cold Formed Steel (CEMCO) > Hat Furring Channel, Stud, Track & U-Channel with DSM Factors.
	Added British > Cold Formed Steel (Kingspan) > Cladding Rails, Multichannel and Roof Purlins.
	Updated ASTM A36 Ultimate Strength (Fu) value.

29 September 2025

	Added geometric plastic moduli to the results.
	Added principal elastic moduli to the results.
	Added a File menu to the top menu in standalone section builder so that all file operations are in one place. You can now import and export SkyCiv Section Files (JSON) from this menu so that the cloud file storage does not need to be used.
	Replace the DB properties with SkyCiv SB calculated properties with the click of a button in the menu above the results table (only available for single DB shapes).
	Warning symbols will be displayed in the results table when the DB properties are significantly different from the SkyCiv SB calculated props. When this warning symbol is hovered over, the actual discrepancy % will be displayed in a tooltip. A side notification for the same warnings will also popup when submitting that section in beam/S3D.
	Improved appearance of menu and buttons above the results table.
	Database shapes will retain their database properties when the unit system is changed in standalone SB.
	The legend signalling that property rows are from the DB has been moved to above the table (previously below the table).
	Added a title above the results table stating the section's name for single DB shapes. Otherwise it will be a generic title labelled "Section Properties".

September 2025

• Added American > Cold Formed Steel (SSMA) > Furring Channel (F), Track (T), U-Channel (U) with DSM Factors.
• Added American > Cold Formed Steel (SUPREME) > Furring Channel (F), Track (SFT) with DSM Factors.
• Added Australian > Cold Formed Steel (Stramit) > Top Hat & Battens with DSM Factors.
• Added British > Cold Formed Steel (Ayrshire) > C Sections, CW Sections, Top Hat Sections, Zed, Zeta II.
• Added British > Cold Formed Steel (MetPurl) > C-Section, Flat Back Eaves Beam, Wide Flange C-Section, Wide Flange Z-Section, Z-Section.

August 2025

• Added Australian > Steel (DuraGal) > Channels, Equal Angles, Flats, Rectangular Hollow Sections and Square Hollow Sections.
• Added New Zealand > Structural Steel (DuraGal) > Channels, Equal Angles, Flats, Rectangular Hollow Sections and Square Hollow Sections.
• Added Metric and Imperial > Steel ASTM A252 (Grades 1, 2 and 3) materials.
• Added 200+ New Zealand > Aluminium sections.
• Added 250+ New Zealand > Structural Steel sections.
• Added graphical button to toggle the visibility of more points like fillet points.
• Added feedback to user when DXF shape is imported about which entities could be imported.
• Allowed line shapes to be converted to points shapes.

July 2025

• Added support for New Zealand sections.
• Added New Zealand > Cold Formed Steel (Metalcraft) > MC Purlins, MZ Purlins, MS Tophats & MS Tophats (Lipped) with DSM factors.
• Added Australian > Cold Formed Steel (Metroll) > C Purlins, Z Purlins & Top Hats with DSM factors.
• Added Australian > Cold Formed Steel (Millform) > C Purlins, Z Purlins, Extreme C Purlins & Extreme Z Purlins with DSM factors.
• Added Australian > Cold Formed Steel (Steeline) > C Purlins & Z Purlins with DSM factors.
• Added Australian > Cold Formed Steel (Studco) > Deflection Head Track & Steel Stud with DSM factors.
• Added Australian > Cold Formed Steel (Stratco) > C Purlins & Z Purlins with DSM factors.
• Added Geometric DSM Factors for American > AISI > Z-Sections W Lips (I-4) & Z-Sections WO Lips (I-5).
• Updated lip length for Australian > Cold Formed Steel (Metroll) > Megaspan C Purlins & Megaspan Z Purlins and DSM factors.

June 2025

• Use a shape's centroid as the origin for its translation. Previously the translation values were based on the shapes bottom-left-most point. Now both options are possible.
• Shared Enterprise/Education Folders can now be used for the 'My Sections' cloud storage of section builder. This affects Enterprise, Business and Education accounts.
• Updated fillet radius value for British > Steel > Rectangular Hollow Sections.
• Updated manufacture process to Hot Rolled for European > Steel > EN 10210-2 Sections (CHC, RHS, SHS).

May 2025

• Added Australian > Scaffold > AT-PAC sections.
• Added support for Singaporean sections.
• Added Singaporean > Steel (Consteel) sections.
• Updated fillet radius value for Mexican > Steel > Rectangular Hollow Sections.
• Updated AS/NZS 1397: Hot-dip coated sheets G550 Yield and Ultimate Strength values.

April 2025

• Added Australian > Timber (Hyne) sections.
• Added Metric > Wood > AS 1720 > Hyne materials.
• A prompt for material assignment will now appear when adding sections from the database.

March 2025

• Added DSM Factors for Australian > Cold Formed Steel (Lysaght) > Topspan (Hat).
• Added DSM Factors for Australian > Cold Formed Steel (FrameCAD) > Channels (Lipped).
• Added Elastic Section Modulus about the w-axis (Point A,B,C) for AISC Unequal Angle sections - SwA, SwB, SwC.
• Added Elastic Section Modulus about the z-axis (Point A,B,C) for AISC Unequal Angle sections - SzA, SzB, SzC.
• Use Design Thickness (t_des) instead of Nominal Thickness (t_nom) for AISC Pipes.
• Apply 0.93 Wall Thickness Factor to Pipes (obsolete), Rectangular tubes (obsolete) and Square tubes (obsolete).
• Removed prompt to apply 0.93 Wall Thickness Factor for AISC Pipes, Pipes (obsolete), Rectangular tubes (obsolete) and Square tubes (obsolete).
• Updated all Material Design Code Labels to be consistent with design standards.

February 2025

• Added Australian > Timber (Dindas LVL).
• Added Ultimate Strength (F_u) for all AS/NZS 4671 materials
• Added AISC 16th Edition sections which include: 6 x W Shapes, 6 x WT Shape, 127 x Rectangular HSS Shapes, 19 x Square HSS Shapes and 64 x Round HSS Shapes
• Added Elastic Section Modulus for all available AISC sections - Sz, Sy.
• Added Elastic Section Modulus about the w-axis (Point A,B,C) for AISC Equal Angle sections - SwA, SwB, SwC.
• Added Elastic Section Modulus about the z-axis (Point A,B,C) for AISC Equal Angle sections - SzA, SzB, SzC.
• Updated Australian > Timber sections structure and labels.

January 2025

• Added Metric/Imperial > Steel > ASTM A193, A307, A320, A354, A449, F1554, F3125 materials.

December 2024

• Tool to manually run the Finite Strip Method to calculate the Direct Strength Method (DSM) factors for cold-formed steel sections.
• Added Metric > Steel > Australian/New Zealand Standard (AS/NZS) > AS/NZS 4671 materials
• Updated Young's Modulus (E) and Poisson's Ratio (v) for all European Steel materials to be consistent with Section 3.2.6 of Eurocode 3 (EN 1993).
• Updated Imperial > Wood > NDS^® dropdown labels to be consistent with NDS^® Supplement (2018 Edition).

November 2024

• Added new sections to British > Steel > Universal beams.

October 2024

• Added DSM Factors for Australian Cold Formed Steel (Lysaght).
• Added DSM Factors for Australian Cold Formed Steel (Metroll).
• Added DSM Factors for Australian Cold Formed Steel (Enduroframe).
• Added DSM Factors for Australian Cold Formed Steel (Stramit).

September 2024

• Added European > Cold Formed Steel (Lindab).
• Added European > Cold Formed Steel (Metsec).
• Added European > Cold Formed Steel (Ruuki).
• Remove American > AISC > Equal Angle > L1 Sections.
• Remove American > AISI > Double C-Sections W Lips.

August 2024

• Added DSM Factors for South African Cold Formed Steel.

29 July 2024

• NEW: Added Australian Cold-Formed Steel Stramit Exacta Cees and Zees.
• NEW: Added Australian Cold-Formed Steel Lysaght Superpurlin Cees and Zees.
• NEW: Added South African Steel and Cold Formed Steel sections.
• NEW: Added South African SANS 1431 Steel materials.

20 June 2024

• NEW: Major update to General Section Designer (GSD):

1. Strength check of reinforced concrete sections of beam and columns in case of biaxial bending + axial force.
2. Supported codes: Eurocode, ACI-318, AS3600, CSA A23.3-04, NSCP 2015, BS 8110, IS456
3. Design (with design coefficients and reducing factor) and nominal (without them) interaction diagrams My-Mz-N for arbitrary angle of bending plane.
4. Curvature - Bending moment (in and out of bending plane) for arbitrary bending plane and predefined axial force.
5. Removed - ellipsoid.

29 May 2024

• When loading sections saved to "My Sections", they will now be converted to the software's current unit system. Previously only the material data was being unit-converted but dimensions were not.

29 April 2024

• Update for ASNZS 3678 floorplate and plate material.

12 April 2024

• NEW: Added American NDS^® TJI joist sections.
• NEW: Improved Mexican steel/cold-formed sections to be aligned with the IMCA manual.
• Added rounded corners on BS steel library rectangular and square hollow sections.
• Fix for AU 100 BT 11 12 15 from column tees to beam tees.

21 March 2024

• NEW: Integration with Detailed Shell FEA Software via Design > Detailed Steel Design.
• NEW: Engineering notation in results table.

20 February 2024

• NEW: Improvements around material selection when choosing a shape from the library database:
1. Material menu will pulse/animate to alert the user to consider the material of the shape when adding the shape.
2. The most suitable material in the users material will be auto-selected based on the database details of the shape rather than using the first material.
3. When using the material database, it will auto-select some of the first fields so that it is easier/quicker to select the material from the database.
4. Previous material will be retained if user chooses another shape in the same in database/library rather than being reset to the first material.
• Fixed some issues with the manufacture process when running inside S3D. Also made it more user-friendly.
• Adding a message explaining why cold-formed channels and angles have an outer-fillet.

15 February 2024

• NEW: European Aluminium Materials.
• NEW: ADM 2015 Aluminium Materials.

15 December 2023

• NEW: Added option to convert values when changing unit system in standalone section-builder.

27 November 2023

• NEW: Added CEMCO Steel Sections and DSM factors.
• NEW: Added Canadian Aluminium Materials to Materials Database.

15 November 2023

• Better warning messages about shear and torsion properties when shapes are disconnected.

10 November 2023

• Added a prompt to apply 0.93 wall thickness factor to AISC Pipes (and obsolete shapes) since it was previously only being applied for HSS shapes automatically.

03 October 2023

• NEW: Added missing sections in British Steel (from UK Steel blue book).
• NEW: Added DSM factors for AISI sections.
• NEW: Added DSM Factors for AS Enduroframe sections.

26 September 2023

• NEW: Saving data functionality added for the general section designer (GSD). The input data from GSD can be saved in the My Section list and used in the future.

27 July 2023

• NEW: Canadian Timber Sections and Materials (CSA O86-14).
• Fixed an issue with radii of cold-formed BS rectangular/square tubes being too large.

29 May 2023

• NEW: British Timber Sections and Materials (BS EN1995-1-1:2004).
• NEW: AS1720 LVL Sections and Materials.
• A warning will be shown if the selected manufacture process for the material doesn't match the recommended manufacture process for the shape. An error will be shown if the selected manufacture process is completely unsuitable for the shape.

27 March 2023

• NEW: Eurocode Timber Sections and Materials.
• NEW: ASTM A1003 Materials.
• NEW: View additional detailed material data after submitting the material from the material database.

20 March 2023

• NEW: Shapes that are touching will be automatically merged in the FEA calculations solver if the user hasn't manually merged them. This improves the accuracy of the FEA results (shear and torsion properties). The SB analysis tool will work with this too.
• NEW: Section Capacity table to give the plastic axial, shear and moment capacity.
• NEW: Plastic shear area.
• NEW: Ability to choose which material is used for the transformed section method when one more than one material is used. Previously the material with the highest E value would be used.
• NEW: Operation fields (rotation and translation) can now accept math expressions.
• NEW: Plot the principal plastic neutral axes and non-principal plastic neutral axes.
• NEW: Generally improved accuracy of the properties that depend on FEA (J, shear area, Iw).
• Generally improved solving speed for complex sections.
• Increased ability to deal with nested shapes and composite materials in SB analysis tool.

09 March 2023

• NEW: Added missing smaller sections in AISC 15th HSS.
• NEW: Added LVL, PSL and LSL shapes for NDS^® as well as LVL materials.

27 February 2023

• NEW: Improved Section Stress Contour Report for GSD including more accurate drawing of Neutral Axis.

13 February 2023

• NEW: PDF report option to standalone version.
• NEW: Control straight-line segments used for arcs when importing via DXF.

27 October 2022

• Clearer UI for editing materials and custom materials. If you edit material properties in the right-menu, it will affect all shapes using that material rather than just the current shape. Previous versions affected only that shape. There is now a dedicated button for adding as many custom materials as needed.
• Fix issues with custom materials in Standalone and when integrated with SkyCiv Beam.

14 October 2022

• NEW: Metroll Cold-Formed Megaspan Lipped Channels for AS4600.

07 September 2022

• NEW: Import DXF POLYLINE for custom line shape (add line shape defined by points and then click "Import DXF" button).
• When running within S3D, a summary of the material's properties will be displayed below the material dropdown selector within section builder. Previously it was not possible to see the material's properties without going back to the materials menu within S3D.

24 August 2022

• NEW: Two new types of Custom Line Shapes. Define these new line shapes using "lengths and arcs" or "lengths and angles". These custom shapes are very useful for cold-formed profiles.
• Changed rounding/precision on the figures in the results table as they will always be to 6 significant figures now.

6 June 2022

• NEW: SkyCiv Section Builder Analysis - Calculate cross-sectional stress results from combinations of applied forces and bending moments.
• NEW: View rendered cross-sectional stress results for any section.
• NEW: Customize and download a PDF report of the stress results.

1 June 2022

• Show the centroid in the position as determined by the transformed section method rather than the geometric centroid for composite material sections.

09 May 2022

• Improved snapping system to be able to snap to other points rather than just the grid. Also now previewing the coordinates and position of the snap point before releasing the mouse.
• Improved appearance of centroid point and principal axes.
• Added static axis reference system (z-y axis) in bottom-left of screen.
• Standalone version now has access to material database.

26 April 2022

• NEW: Export shapes to DXF file.
• NEW: Scaling factor when importing DXF files to account for different units systems.

17 November 2021

• NEW: Hat Sections added to Lysaght database for AS4600.

15 November 2021

• NEW: Calculate Monosymmetry constants.
• NEW: Upload your own custom section library via CSV.
• Improved appearance and usability of Database Shapes catalog.
• Improved appearance and usability of My Sections.

21 October 2021

• NEW: Calculate Shear Center and plot its point.

28 September 2021

• Use a more central and unified location for the checkbox that removes other shapes before adding new shapes.
• Added option to consider offsets of prismatic member segments for non-prismatic member sections.
• Bug fixes for using the transformed section method of composite material sections when cutouts involved.

22 September 2021

• NEW: Double Lipped Channel template shape.
• NEW: Difference Operation between two shapes.

15 September 2021

• NEW: Snap size to assist with translating/dragging shapes.
• NEW: Helper buttons in graphical window.
• NEW: Operations between two shapes (Union and Intersection).
• NEW: Australian FrameCAD Cold Formed Steel Sections.
• NEW: Tapers can taper to a larger size rather than just a smaller size.
• NEW: DXF importer can now handle polyline bulges.
• NEW: If a solid shape is enclosed by another solid (i.e. the parent of the original solid) then it will automatically cutout and fill the parent solid's material. This is useful in creating composite shapes quickly.
• Several other improvements to DXF importer.
• Improve the way overlapping shapes are detected for warning and error purposes.
• Improved styling of results/properties tables.
• Using the Enter key on dimension fields will update graphics.
• Added manufacture process dropdown to assist with design codes.

06 May 2021

• DXF importer can now import circle shapes.

21 April 2021

• NEW: Tee Rail section profile.
• Fixed issues with the guiding line of custom points and line shapes.

12 March 2021

• Point coordinates that show when hovering over a point are now clearer and easier to read.

02 February 2021

• Fix issue with AS4600 Lysaught Cold-Formed Lipped Z-shapes having an angled lip instead of a vertical lip.
• Lipped Z-shapes template now have a "Lip Angle" field that can be controlled by the user.
• Lipped Z-shapes are now adding a radius at the lip.

05 November 2020

• Lipped Channels have been modified to include the fillet/radius on the 4 outer-corners of the shape.

03 June 2020

• NEW: Plastic neutral axis result is now available.

07 April 2020

• NEW: Faster submission of database sections.

12 March 2020

• NEW: Added undo/redo buttons to top-menu via Edit menu which can also be accessed via keyboard shortcuts.

16 December 2019

• NEW: British Cold Formed Steel Database now available.

29 November 2019

• Solver timeout time is now indefinite but after 30 seconds the user will have the option to cancel the solve with a button if it is taking too much time.

12 September 2019

• NEW: Add new option for simplifying small arcs with straight lines when importing DXF files.
• Increase solver timeout to 2 minutes as some complex shapes may take longer to solve.

31 July 2019

• NEW: Add options when importing DXF files like point merging tolerance.
• Fixed annoying issue with custom shapes data tables cells not responding sometimes.
• Fixed issue where shape wouldn't be centered in reporting images.

25 July 2019

• NEW: Added Virtual Joists from Steel Joist Institute to the database.

02 July 2019

• NEW: Added Heavy Truss Eurotruss to the database.

12 June 2019

• NEW: Plastic Section Modulus results will be used from the database if they exist.
• Added Elastic Section modulus to top and bottom of section for both axes (Syt, Syb, Szt, Szb).
• Improved accuracy of elastic section modulus values when database values are in use.

29 May 2019

• NEW: Convert a "Points Shape" to a "Template Shape" in the points shape's "Operations" tab.
• NEW: Convert a "Template Shape" to a "Database Shape" in the template shape's "Operations" tab.

13 May 2019

• NEW: Shapes Selector in the bottom-left of screen. It's now possible to move shapes up/down the list which affects the way holes are operated. It's also now possible to clone and delete shapes using this box too.

10 April 2019

• NEW: Added Chinese Steel Database.
• Split Australian Steel database into 250 and 300 Grade whilst adding more 300 Grade sections since 250 grade is basically obsolete now.

02 April 2019

• Made improvements with importing DXF files. Now it will better support line and arc entities.

23 March 2019

• NEW: Added searchable field for database sections. This makes it quicker to find the database section you're looking for.

12 March 2019

• NEW: General Section Design (GSD) tool added in BETA stage development. Only concrete is available at the moment. Access it from the top menu: Design > Concrete.
• NEW: Plastic Section Modulus property is now calculated.
• NEW: Ability to change mesh size.
• NEW: Ability to show mesh after solving. Click "Show Mesh" button in results table.

04 March 2019

• Fixed issue with clicking and accessing dimension labels that were above shapes.

21 February 2019

• NEW: Added "Bulb Flat" template shape.
• NEW: Added British Bulb Flats to database (Database > British > Steel > Bulb Flats).
• NEW: Centroid results will be taken from database if results exist.

06 February 2019

• NEW: Translate entire shapes via the mouse (click + drag).
• NEW: Move points associated with "Points Shapes" and "Line Shapes" via the mouse (click + drag).
• NEW: Convert any shape to a "Points Shape" in the shape's "Operations" tab.
• Improve mirror switches in Operations tab.

09 January 2019

• NEW: The results table will now indicate which section properties came directly from the database when database shapes are added.

24 December 2018

• Improvement: DXF Import will now automatically move shapes to the origin for easier viewing.

10 December 2018

• NEW: Canadian CSSBI Database now available.
• NEW: Australian Cold Formed Steel (AS4600) Database now available.

v1.1.7 - 01 June 2018

• Improvement: Circular and Hollow Circular sections now use exact calculation methods instead of polygon approximations for area, Iz, Iy, and Izy.

v1.1.6 - 27 April 2018

• NEW: DXF files with holes can now be imported as a custom shape.

v1.1.5 - 6 December 2017

• Bug Fix: If materials did not start at id 1, the templates/catalogs would produce an error because they could not find the default material to initiate the shape. The default material is now the first defined material in your materials.

v1.1.4 - 4 December 2017

• NEW: National Design Specification (NDS^®) for Wood Construction catalog now available as a database.

v1.1.3 - 22 November 2017

• NEW: AISI Sections available! Tables I-1 to I-8 now available as a database.
• NEW: Channels with lips now available as a new template!
• NEW: Angles with lips now available as a new template!
• NEW: Z-Sections now available as a new template!
• NEW: Z-Sections with lips now available as a new template!
• NEW: Hat Sections now available as a new template!

v1.1.2 - 12 October 2017

• NEW: Added double channel section template.
• NEW: Added double channel sections (2C and 2MC Shapes) in the AISC Steel Database.

v1.1.1 - 23 August 2017

• NEW: Added HSS sections in the Eurocode Steel Database.
• Improved the appearance of dimension lines.

v1.1.0 - June 2017

• NEW: Hand Calculations: Available for Rectangular, Hollow Rectangular, Circular, Hollow Circular, I-Beam, T-Beam, Angle, Channel, and Triangular.
• Custom Shape "Clear" button to clear the datasheet.
• New default sections for Points Shape and Line Shape
• More feedback given to the user if they are not able to submit their points / line shape.
• The integrated version of Section Builder now allows the switching and editing of sections within Section Builder.
• General bug fixes

v1.0.3 - 13 February 2017

• NEW:Added the Canadian CISC database of shapes.

v1.0.2 - 13 January 2017

• NEW: Added new template shape - the Double Angle!
• NEW: Added the AISC database for Double Angles! Simply go to Database -> American -> AISC -> Double Angle
• Quick section property calculations for single circles and hollow circles.
• Section names now show up in S3D. Sections made up of database shapes only will use the database name. Others will use the height x width to name the section.
• Points shapes and Line shapes now check for duplicate points and remove them upon clicking submit.
• Renamed True/False to Yes/No in mirroring.
• Bug fix with section summary not showing in the single member report. Corrected and now shows.
• Bug fix with rendering of clockwise shapes. This is now checked for and reordered before being rendered.

v1.0.1 - 07 December 2016

• NEW: Added new template shape - the Triangular Hollow Section (THS)!
• NEW: Multi-Trusses (EuroTruss) have been added to the Database Library. Model deflection values for Ladder Trusses, Triangular Trusses, and Square Trusses.
• Rectangular Hollow Sections (RHS) are now parameterised by two thickness values. Easily model RHS's with unequal vertical and horizontal thicknesses. Backwards support for previously saved RHS's.
• The section property results are now displayed in a more readable format. Trailing zeros are removed, and scientific notation is used when results get too long.

v1.0.0 - 17 November 2016

• NEW: First release of SkyCiv Section Builder (SB) which now supersedes the Moment of Inertia (MoI) Calculator.
• NEW: Built up sections can be modeled by adding multiple shapes onto the design area.
• NEW: Custom shapes can be defined via points of a shape (points shape) or the path and thickness of a line (line shape).
• NEW: Supports DXF imports to define custom shapes created through CAD packages.
• NEW: Holes and cutouts can be specified.
• NEW: Operations including rotation, translation, and mirroring can be used to specify relative positioning.
• NEW: Individual shapes can be assigned individual materials creating composite sections.
• NEW: Dimension lines are drawn on the shape and can be edited directly.
• NEW: Added a screenshot function.
• NEW: More section properties are calculated like the torsion constant, warping constant, shear areas and section moduli.

29 September 2026

	You can now draw structural members at their real section size as editable CAD geometry. Use the "Draw Member Outlines" button in the Structural Exporter or the right-click menu, for the whole canvas or only the selected members.
	You can now add sections and materials to your structural model from the Section Library and Material Library in CAD. Pick a profile or material and use "Add to structural model" to make it available for your members.
	Structural elements now go on a dedicated "Structural Model" layer, whether they come from S3D or are drawn in CAD. You can turn this off in the Structural Exporter settings.

22 September 2026

You can now create L-shaped and custom polygon scale frames from the Scale Frame flyout. This lets a frame follow irregular drawing areas instead of being limited to a rectangle.

16 September 2026

	You can now turn every scale frame in your project into PDF pages in one step with "Transform All Scale Frames into PDF Pages". Each page takes its boundary and scale from its frame. You can also assign a scale frame to an individual page from the page list.
	Text in tables with fixed column widths now wraps inside its cell, and the row height grows to fit.

7 September 2026

Using TAB when hovering over multiple items will now toggle the selection between those items, so you can reach an object sitting underneath others without zooming in. You can also enable a Candidates List from the Selection Mode flyout, which shows every item under the click so you can pick one from the list instead.

3 September 2026

	CloudCAD drawings can now be linked to a Structural 3D model and kept in sync in both directions. Create the link from either app, then use the single Sync button, which shows which side is ahead and warns before either direction overwrites newer work.
	You can now insert a 3D view of your structural model into a drawing from the Structural Exporter. It behaves like any other image, and double-clicking it reopens the 3D view rebuilt from your current geometry, so you can re-aim the camera or change its aspect ratio.
	A new Measure Distance tool reports the distance and angle between any two points you click, and creates nothing on the drawing.
	Explode now also works on hatches, breaking a hatch into the lines, arcs and circles that form its boundary and removing the fill pattern.

27 August 2026

	Hatch now includes standard material patterns for concrete, steel, earth, sand and stone, and you can load your own from a .pat file.
	Lines can now be given a plate role with their own material and thickness, exporting to Structural 3D as vertical plates extruded up to the next elevation.
	You can now show the structural members that cross a canvas without belonging to it: columns owned by another canvas appear as filled dots, and diagonal braces as rings where the elevation cuts them.
	You can now set a drawing scale for the whole canvas and create any number of scale frames inside it, with line weights scaling to match. Previously, a canvas allowed only one scale frame.

4 August 2026

You can now import a PDF at its true scale by choosing the page and its drawing scale, so the sheet lands at real world size ready to measure and trace over.

31 July 2026

	You can now align, evenly distribute and flip any selection, with the first object you select staying put as the anchor.
	Block instances can now be exploded back into their individual objects from the right-click menu.
	Dimensions now support custom text and formatting. From a dimension's properties you can replace its label with your own text, or set a prefix, suffix, decimal precision and whether the unit label is shown, either for that single dimension or for its entire attribute style.
	Hatch now works from a boundary you draw over the region. Previously, you had to draw and select the closed geometry first.
	Text is now placed as a box: click two corners to set its width and the content word-wraps to fit, with handles to resize and rotate it. Previously, text sat on a single anchor point and did not wrap.

15 July 2026

	Every creation tool now accepts a typed absolute X and Y for its first point, as do relative move, copy and stretch, with SHIFT+TAB cycling between delta, polar and absolute input.
	Overlapping objects can now be reordered from the right-click menu with Bring to Front, Bring Forward, Send Backward and Send to Back.
	Holding SHIFT over a selected polyline's grips now lets you add a node at any midpoint or remove one at any vertex.

27 June 2026

	Blocks are now constant throughout a drawing. Previously, blocks were limited to the canvas they were created in.
	Sections can now be imported from our Section Builder library as Block elements. Click on the "Import Section From Library" in the SB list to access this feature.

19 June 2026

You can now import SVG files, with the drawing scale detected automatically from any dimension label sitting near a line.

10 June 2026

Initial release of SkyCiv CloudCAD - Modern 2D CAD software, fully integrated with SkyCiv S3D Try it now!

17 September 2026

	Added scale slider for loads.
	Added scale slider for boundary, spring and reactions.

1 April 2026

	Results Query in Results View: A results query feature is now available in the results view. Users can select points directly on the model to view values at specific locations. Multiple query points are supported, with labels displayed on the 3D model.
	Custom rigid body input for boundaries
	Improved 3D Rendering: Previously, rendering could fail in the member-type software due to the multi-window display. This issue has now been fixed.
	Full Model Attribute Saving and Loading: All model attributes can now be saved and restored. Previously, only geometry and geometry-based attributes were saved, while mesh-based attributes were excluded. Now, the generated mesh, along with all mesh-based loads and constraints.
	Persistent Chart Node Selection: In the chart window, selected displacement nodes and force extraction nodes are now stored for reuse after model modifications and re-analysis. When the analysis is run again, the same predefined nodes remain available for monitoring model behavior.

March 2026

	Renamed module Detailed Shell FEA to Advanced Beam Analysis.
	Users can now choose custom colors in the display settings to control how the model is rendered and visualized.

April 2025

• Added a materials database.
• Enabled copying material properties from one material to another.
• Included additional benchmark cases in the Detailed Shell FEA verification report.
• Resolved an issue where entering a density value would sometimes prevent the model from solving.

14 May 2024

• NEW: Integration of Beam Detailed FEA into SkyCiv Beam: Create your model in SkyCiv Beam and seamlessly transition to detailed finite element analysis (FEA).
• NEW: Materials Database Based on Selected Design Code: Utilize a comprehensive materials database tailored to your chosen design code.
• NEW: Custom FE Shell Thickness in Meshed Model Mode: Update finite element (FE) shell thickness by selecting specific model zones without returning to geometry mode.
• NEW: Boundary Conditions for Plate Areas: New input option for boundary conditions for nodes within plates in Member FEA.
• NEW: Force Area (Plates) Loads: New input option for applying loads to finite elements within plates in Member FEA.
• NEW: Plate Area Linear Springs: New input option for assigning springs to nodes within plates in Member FEA.
• NEW: Rigid End Displacement: Load displacement input for the master nodes at the rigid ends of members.
• NEW: Model View Status Box: A new status box in the model view window displaying information about defined properties.
• NEW: Perspective mode for camera.

21 March 2024

• NEW: Added Initial State > Custom FE Thickness where you can change the thickness of the elements after meshing. This avoids having to un-mesh/re-mesh to change thicknesses in the model.

01 March 2024

• NEW: Initial Stress as Initial Conditions: Defines a pre-existing stress state within the structure due to residual stresses from manufacturing, assembly, or previous loadings, before applying any external loads or boundary conditions.
• NEW: Linear Point Springs at Rigid Member Ends: Implements springs at the ends of members to simulate elasticity.
• NEW: Linear Point Springs at Custom Node Groups: Allows the application of linear springs at designated groups of nodes.
• NEW: Compression and Tension-Only Springs with Gaps: Springs that operate under compression or tension, including a gap feature before activation.
• NEW: Nodal Concentrated Forces at Custom Node Groups: Enables the application of concentrated forces at specified node groups.
• NEW: Rayleigh Damping Input for Dynamic Analysis: Incorporates Rayleigh damping for more accurate dynamic analysis simulations.
• NEW: Varied Load-Time Amplitudes for Applied Loads: Assigns different load intensities at various times to simulate real-world conditions where loads fluctuate.
• NEW: Variable Y Position of Member Profile Section: Adds the ability to modify the Y position of the section in member profiles.
• NEW: Geometry Parameters in Member FEA Application: Applies parameters such as diaphragms, openings, stiffeners, and plate lines not only to the last row but to any selected row from the entry table.
• NEW: New display settings added to the geometry and results output.

• NEW: Animation View of Model Deformation and Results Contouring: After nonlinear analysis, view animations of deformation, plasticity, and failure.
• NEW: Reaction Arrows Display: Shows reaction forces visually with arrows.
• NEW: Table Results Display during Nonlinear Analysis: Presents displacement and reaction force data in table format alongside chart data.

• Incorrect Beam Geometry Dimensions Display: Corrects the display of beam dimensions during input.
• Meshing Failure: Addresses mesh generation issues in specific cases of non-prismatic beams.
• Unavailable Results Post-Nonlinear Analysis: Ensures results are displayed correctly after conducting nonlinear analyses.

18 October 2023

• NEW: Added new detailed steel member software called "Member Shell FEA". Please view more information here.

13 June 2023

• NEW: Added sinusoidal corrugated shape input for the web.
• NEW: Split the existing web or flange part into parts with a mouse click.
• NEW: The beam length can now be fixed while the user updates the web/flange part length or the space between stiffeners/openings.
• NEW: Added templates for auto-creation of web and flange shapes.
• NEW: Vertical and longitudinal stiffeners can be created by clicking on the web.
• NEW: Web openings can be added by clicking on the web.
• NEW: Added input of distributed boundaries to the flanges.
• NEW: Node boundaries can be added by selecting a group of nodes.
• NEW: Forces can be added by selecting a group of finite elements.
• NEW: Specified displacements can be added by selecting a group of nodes.
• NEW: Added explicitly dynamic analysis option for case that require highly non-linear analysis where convergence is difficult to achieve by static analysis.
• NEW: Added new options to display chart results after non-linear analysis.
• NEW: The user interface is improved to handle tablet devices.

02 March 2023

• NEW: Arched beam function.
• NEW: Flange distributed boundaries.

06 February 2023

• First release

8 October 2026

Members can now be set as continuously braced about their minor axis (for example by sheeting) in AS/NZS 4600:2018, with the new Minor Axis Bracing option in the Restraints tab. It is available when every segment of the member is braced against global buckling. The minor axis moment My* from the analysis is ignored, and the checks are carried out about the geometric axes of the section instead of its principal axes, using the geometric axes DSM factors for Z and Lipped Z sections. Global buckling bracing and minor axis bracing can also be set in the design parameters of the members in the model, for example through the API.

The AS/NZS 4600:2018 report of a member braced about its minor axis shows the section properties and sketch about the geometric axes, notes that My* is ignored and the minor axis bending checks are not needed, and warns when a geometric axes DSM factor is not available and the principal axes value is used instead.

23 February 2026

	T sections are now supported in CSA S16-24.
	Serviceability checks were improved by separating the two principal directions in CSA S16-24.
	The CSA S16-24 calculation report now includes an optional table format as an alternative to the detailed calculation view, providing a shorter summary for quick review of results by limit state.

6 January 2026

Canadian standard for the design of steel structures 2024 (CSA S16:24) is now available in S3D. Supported section shapes: I Section, Hollow Rectangular, Hollow Circular and Channel.

24 November 2025

Following a recent review of our shear capacity calculations for AS 4100:2020 and NZS 3404:1997, the following updates have been made: For Channel sections, the minor-axis shear check now assumes a non-uniform shear stress distribution. A maximum-to-average shear stress ratio of 1.5 is used unless stress analysis is enabled. The major-axis check is unchanged. For I sections, the minor-axis shear check now also assumes a non-uniform shear stress distribution. A maximum-to-average shear stress ratio of 1.5 is used unless stress analysis is enabled. The major-axis check is unchanged. For T sections, the maximum-to-average shear stress ratio used in the minor-axis shear check has been updated to 1.5 (previously 1.1) unless stress analysis is enabled. The major-axis check is unchanged.

7 November 2025

Fixed major calculation error in the reported tension capacity Ndt per AS 1720.1—2010. The k1 factor had been incorrectly applied as 1 for all load combinations; it is now calculated correctly for each load combination. This affected the capacity and the utilization ratio shown in the detailed report. Note: the utilization ratio in the UI design results table was already correct and remains unchanged.

22 October 2025

Eurocode 3 (EN 1993-1-1:2005) now supports multiple segments defined by Lcr for the Lateral Torsional Buckling check. The software calculates the C1 factor and the capacity for each segment. The C1 factor is calculated using the equation proposed by M.A. Serna et al. (2006) for lateral bending and warping free at both end supports.

23 September 2025

Multiple changes and improvements the American design module for Cold-formed Steel Members (AISI S100-16 ASD, AISI S100-16 LRFD and AISI S100-16 LSD):

• Updated shear area calculation for the minor axis of Z-sections to consider only one flange.
• Fixed bug in shear area calculation for the major axis of hat sections.
• Fixed bug in shear area calculation for the minor axis of channel sections.
• Section dimensions are now included in the report.
• Moved the properties and dimensions table to the top of the report.
• Added section dimension checks per Table B4.1-1.
• Added support for full bracing in compression to skip lateral-torsional buckling checks.
• Fixed bug related to user-defined K values.
• Default value of Cb = 1 is now used when calculation is not possible.
• Default value of Cs = 1 is now used when calculation is not possible.
• Added calculation of Cb for minor axis bending.
• Added calculation of Ctf (previously always set to 1).
• Changed elastic section modulus of Z-sections from the geometric axis to the principal axis.
• Minor axis bending report is now always shown, even when the moment is zero.
• Fixed incorrect references in the report.
• Fixed unit-related bug affecting DSM factors.

18 September 2025

• EN 1993-1-3:2006 (Eurocode for Cold-Formed Steel): Added calculation of lateral-torsional buckling capacity for multiple segments within a design member based on user-defined unbraced lengths.

11 September 2025

Multiple changes and improvements the American design module for Cold-formed Steel Members (AISI S100-12 ASD and AISI S100-12 LRFD):

• Changed the value of r (radius of gyration) used in flexural buckling capacity calculations to r_min instead of the radius from the axis under consideration.
• Lateral-torsional buckling results are now displayed even when the moment is zero.
• Corrected wrong variable names in the report.
• All section properties are now reported in the geometric axis.
• Fixed incorrect references in the report.
• Corrected values for plastic modulus and moments of inertia in the report.
• Updated the shear area for Z-sections in the minor axis to consider only one flange.
• Improved the calculation of effective section properties.
• Changed the default axis for hat sections to consider the symmetric axis as the Z-axis.
• Fixed an issue where the user-defined C_b value was not applied correctly.
• Fixed unit handling for lengths in lateral-torsional buckling calculations.
• The mono-symmetry constant (j) is now always considered positive.
• Resolved issues when moments were set to zero.
• Added lateral-torsional buckling checks for the minor axis in both positive and negative bending.
• Added positive and negative bending checks for all relevant calculations.

23 August 2025

• Fix the formula used for the reduction factor for outstand elements in EN 1993-1-3:2006 when the slenderness ratio is less than 0.748 as per EN 1993-1-5:2006 clause 4.4(2).
• Improve the section classification algorithm in EN 1993-1-5:2005 to use the critical class from the existing loading conditions. Previously it was using the critical class from all the loading conditions even if those were not present.
• Fix the forces used for the design of a member composed by multiple colinear elements in AS 1720:2010. Previously, the forces were considered over-conservatively by superposing the effect of all the elements.

19 July 2025

Multiple changes and improvements the European design module for Structural Steel Members (EN 1993-1-1:2005):

• The section classification was improved, including the addition of a table detailing the variables involved in the classification calculations.
• Clause 6.3.1.2(4) related to axial buckling capacity to determine whether the verification check can be omitted was included.
• Included Clause 6.3.2.2(4) related to bending capacity to assess whether the verification check can be omitted.
• Added flexural-torsional buckling checks for non-square RHS sections and T-sections.
• Added Clause 5.4.1(3) for singly symmetric sections, establishing their classification as Class 3 when subjected to bending about their non-symmetric axis.
• Added Clause 6.2.8 concerning the reduction of bending capacity due to high shear stress. Additionally, the check has been incorporated into both tension and compression verifications, as it is essential for combined checks.
• The rupture tension check has been incorporated, with the net area by default set equal to the gross section area.
• The parameter C1 for the buckling critical moment (Mcr) is now set to 1 by default, with the option for the user to specify a custom value.
• The formula for calculating the shear area of T-sections has been modified to yield a more accurate value.
• The parameter λ_lto has been changed from 0.2 to 0.4 for HSS sections.
• General enhancement of the report, including the addition of station information and load combinations considered in the check. Effective lengths have also been included in the report within their respective checks.

04 June 2025

Multiple changes, improvements and fixes in the Australian Cold-Formed Steel Design Code AS 4600 2018:

• Add a clear warning to the report when the DSM factors are not defined for a given section.
• Add inputs for user-defined correction factor for distribution of forces (k_t) and Net Area Factor (A_n) to calculate the section capacity of a member in tension.
• Set the shear modulus of elasticity (G) to the fixed value of 80 x 10³ MPa as specified in D1.1.1.2, this can be adjusted in the member design module settings.
• The coefficients C_TF and C_s for singly-symmetric sections are now properly calculated as per D2.1.1.2. Previously, C_TF was fixed to 1.0 and C_s was inverted for hat sections.
• Calculate the property I_yc for Zee sections as half of the second moment of inertia in the minor axis to compute Mo for point-symmetric sections.
• Remove the Load Height (load_height from the API) and Longitudinal Load Position (longitudinal_load_position from the API) inputs in the restraints input table to completely remove the method to determine the effective length for member bending capacity borrowed from AS 4100 2020 and NZ 3404 1997.
• Rename the Continuous input in the restraints input table to Global Buckling Bracing, with options: Unbraced, Top, Bottom, Both (unbraced, top, bottom, both from the API, respectively). When braced, the segment capacity for global buckling will be taken as the section's yield capacity under bending and compression.
• Add an input for the effective length factor for the twist compression segment (K_x) for user-defined factors (Kx from the API).
• Add inputs for a single effective length factor (K_LT) for Lateral-torsional buckling in the major and minor axes for user-defined factors (kltz and klty from the API) to replace the previous three factors borrowed from AS 4100 2020 and NZ 3404 1997.
• Review all the section properties used in the calculations making sure the values are correct, and move the section properties report to the beginning of the detailed report.
• Use always the positive value of the Monosymmetry constant (β) from the Section Builder. Previously we were using the positive and negative value for positive and negative bending in the non-symmetry axis which was incorrect.
• Improve wording and remove unnecessary/repeated sections of the Detailed Report.

Multiple changes, improvements and fixes in the American Cold-Formed Steel Design Code AISI S100 2016:

• Remove the Load Height (load_height from the API) and Longitudinal Load Position (longitudinal_load_position from the API) inputs in the restraints input table to completely remove the method to determine the effective length for member bending capacity borrowed from AS 4100 2020 and NZ 3404 1997.
• Rename the Continuous input in the restraints input table to Global Buckling Bracing, with options: Unbraced, Top, Bottom, Both (unbraced, top, bottom, both from the API, respectively).
• Add an input for the effective length factor for the twist compression segment (K_x) for user-defined factors (Kx from the API).
• Add inputs for a single effective length factor (K_LT) for Lateral-torsional buckling in the major and minor axes for user-defined factors (kltz and klty from the API) to replace the previous three factors borrowed from AS 4100 2020 and NZ 3404 1997.

Minor improvement in the Australian and New Zealand Structural Steel Design Code AS 4100 2020 and NZ 3404 1997:

• Add option to automatically determine the longitudinal position of the load for each segment to calculate the load height factor (k₁) as per table 5.6.3(C)

29 April 2025

• Display the correct capacity in the summary report for NDS 2018. Previously, the report was showing the minimum capacity instead of the capacity associated with the critical utilization ratio. This issue only affected the summary report display; the underlying calculations were correct and remain unchanged.

14 February 2025

AS4100-2020

• Resolved an issue where effective length value was being used in the calculation of nominal member capacity (Nc) for combined actions capacity as per Clause 8.4.2.2. This resulted in conservative results for member combined actions capacity.

AS4100-1998: A comprehensive second round of testing performed with the following changes made. Please note that none of these issues were found in the AS4100-2020 module which went through a third round of validation.

• Tension rupture checks have been added, which may affect tension capacity (PhiNt) values.
• Issues resolved involving form factor calculations (kf) for some I-sections and SHS shapes. This previously resulted in some non-conservative results for section compression capacity (PhiNs).
• Member axial buckling capacity about the major/minor axis calculations updates for a number of shapes. This previously resulted in non-conservative results for member compression capacity (PhiNcy & PhiNcz).
• Major axis effective section modulus (Zez) was being underestimated for PFC sections. This previously resulted in conservative results for section moment capacity (PhiMsz).
• Minor axis effective section modulus (Zey) was being underestimated for I-sections. This previously resulted in conservative results for section moment capacity (PhiMsy).
• Effective section modulus (Zez, Zey) were being overestimated for some PFC and SHS/RHS shapes, which has been resolved. This previously resulted in non-conservative results for section moment capacity (PhiMsz).
• Major axis shear capacity was being overestimated for some I-sections and SHS shapes. This previously resulted in non-conservative results for section shear capacity (PhiVvy).

23 January 2025

Multiple changes and improvements the European design module for Cold-Formed Members (EN 1993-1-3:2006):

• Enhanced calculation of plasticized sections based on stress gradients about the geometric axis. Improvements and fixes were implemented following an independent third-party review.
• Added support for Z-sections with equal and unequal flanges.
• Extended support to channel and lipped channel sections with unequal flanges (previously limited to equal flanges).
• Reports now include visual representations of plasticized sections for each limit state.

15 January 2025

• Add a basic stress check for torsion as per Eurocode 3 (EN 1993-1-1:2005).

09 January 2025

Multiple changes, improvements and fixes for NDS:

• Minor updates to labels and tooltips to fix typos and add precision.
• Switched all units to "psi" in the report to simplify checks and formulas.
• Fixed a bug which created an error when members were deleted from the "Design Members" table.
• Added calculations steps for C_L, F_cE1, F_cE2 and F_bE to the report.
• Added support for negative moments. When negative moments are used, F_bx- is now considered.
• Fixed import bug for the "Spruce-Pine-Fir (S) (E=2.0_and_higher)" material.
• Simplified "Import Material" menu by pre-selecting imperial and wood values.
• Set size factor C_F = 1.0 for compression and tension strength checks of sawn members.
• Updated the value of F_cE to use the minimal value of E_xmin or E_ymin for glulam beams.
• Added the reductions for E_x and E_xmin for glulam members with 15 laminations or more.
• Added the F_bx reduction for members over 16 inches high.
• Added the F_vy reduction for members with 4 laminations or less.
• Set C_V = 1.0 for bending of glulam members when used in standalone. Updated the tooltip accordingly.
• Added the intermediate step of converting the section to an equivalent square section before calculations for poles.

31 October 2024

Multiple changes, improvements and fixes in the American Cold-Formed Steel Design Code AISI S100 2012:

• Change default value for "Cb" from 1 to calculated value.
• Add value of the section modulus “Sxp” and “Syp” to the report.
• Solve bugs in the calculation of effective properties in all supported sections. All the effective properties are now calculated according to AISI S100 2012 (Chapter B ELEMENTS).
• Fix bug in the calculation of “Sfy” in the principal axis. It is now properly calculated using the properties in the principal axis.
• Fixed orientation of Hat sections to use axes as defined in the Standard. The symmetric axis is the X axis.
• Fix a bug in the lip angle for the Z section, taking it directly from the section properties. This issue was affecting the section properties calculation.
• Consider Lateral-torsional and distortional buckling in the combined compression and bending strength.
• Add calculation of “Se” in the minor axis for Zee, Lipped Zee and Hat sections.
• Fix print issue in the report of “sigma_ey”.
• Standardize the number of decimal values in the report.
• Allow design of any section from the database from the supported shapes. Previously it was restricted to some of them.
• Fix value of h in the shear check.
• Delete unnecessary texts in the report.
• Improve section graphic in the report.

23 October 2024

• Support cold-formed European database shapes with equal flanges in the European design code (EN 1993-1-3:2006).
• Improve the general appearance of the report for EN 1993-1-3:2006.
• Fix some calculation issues in the effective section properties in EN 1993-1-3:2006.

21 August 2024

• Support South African Steel database shapes in the Australian, European and American design codes.
• Support South African Cold Formed Steel database shapes in the Australian and European design codes.
• UI Improvement
  Improve the error messages with guidance on how to fix them: issues with ill-defined restraints, section properties missing or not supported manufacture process.
• Calculation Issue
  Fix in the nominal flexural strength for Compression Flange Yielding for W shapes in AISC 360-16. The wrong modulus was being used to calculate it.
• Improve the appearance of some sections of the report in AISC 360-16 for HSS and CHS.

05 August 2024

• UI Improvement
  The design member IDs now match the corresponding S3D element IDs in the design codes this was not the case and appeared to be randomly/sequentially assigned (AS 4100:2020, NZS 3404:1997, AS/NZS 4600:2018, AISI S100-16, EN 1-3 2006).
• Calculation Issue
  Design modules AISC 360-16 and AISC 360-10 were independently reviewed and validated by engineers. From that review, the following changes were applied:

• Improve general appearance of the report, fixing some math rendering issues and removing some irrelevant information.
• Add additional information of the section properties to the report.
• Fix “Qa” calculation for HSS (Hollow Structural Section). Affects AISC 360-10.
• Fix wrong classification in the report for HSS. Affects AISC 360-10.
• Fix “be” and “Ae” calculation for HSS. Affects AISC 360-16.
• Add missing sections to the report for HSS: web local buckling, lateral-torsional buckling, major bending. Affects AISC 360-16.
• Add missing checks for slender web in W section: major bending. Affects AISC 360-10.
• Fix “rt”, “Lp”, "Iyc" calculations for W section. Affects AISC 360-10 and AISC 360-16.
• Fix “Qa” and “Rpg” calculations for W section. Affects AISC 360-10.
• Add missing check for non-compact, slender web, and bending major for W section. Affects AISC 360-16.
• Add lateral torsional formula for W section. Affects AISC 360-16.
• Fix "lambda_w" calculation for C (Channel) section. Affects AISC 360-10 and AISC 360-16.
• Fix torsional and flexural-torsional buckling calculation checks for compression in T section. Affects AISC 360-16.
• Add missing flexural-torsional check for Angle section. Affects AISC 360-16.
• Add lateral torsional check for T section. Affects AISC 360-16.
• Fix bug in local buckling of Tee Stems calculation for T shape. Affects AISC 360-16.
• Fix bug in "Mp" calculation for T shape. Affects AISC 360-16.

18 July 2024

BETA tags removed for AS 4100:2020 and NZS 3404:1997 after an independent review and validation by engineers. From that review, the following changes were applied:

• Use different yield stresses for each section component depending on its thickness. This applies to database materials included in AS 4100:2020 Table 2.1 and NZS 3404:Part 2: 1997 Table C2.2.1.
• Use as-rolled as the plate's origin for custom welded-plates sections. Universal Beams and Universal Columns use flame-cut. This affects the member compression check in the major and minor axes.
• Support user-defined parameters for the tension check. Users can modify the values for k_t (correction factor for distribution of forces) and factor to calculate A_n.
• Include the flanges' thickness in the web area for shear capacity in hot-rolled sections.
• Improve the calculation of the effective area for all sections.
• Fix the calculation of the monosymmetry section constant (Beta) for Tee sections.
• Add a setting to skip a stress analysis to find the average to maximum shear stress ratio and use approximate formulas. By default, the shear stress analysis will be used.
• Include in the report the calculations and results for determining "Full Lateral Restraint" on the critical segment.
• Bug fixed in the assignment of cross-section restraint to take into account the restraint conditions of the non-critical flange.
• The longitudinal load position factor should be calculated by the software instead of being a user input, as it might vary from load combination to load combination. At the moment, users have to select a conservative value for all load combinations. In a coming version, the software will calculate it automatically using the loading conditions in the model.
• Default the load height to 'top flange' in all the segments because it is more conservative and aligns with most real-life scenarios.
• UI/UX improvements to the UI, removing unused inputs and smoothing the workflows to Join/Split/Auto-group members.

03 June 2024

• NEW: Eurocode for cold-formed members (EN 1-3 2006) is now available in S3D. Supported section shapes: Channel, Channel with Lips, and Hat.

14 March 2024

• DSM factors entered for custom template shapes are properly saved and loaded.
• Design sections are not filtered by manufacturing process anymore but rather by their section database.

01 November 2023

• NEW: AISI S100-16 ASD, LSD and LRFD is now available in S3D.
• NEW: Filterable columns can be used in the Members Table for Length, Material ID and Section ID when using in S3D for the older V1 codes.
• NEW: Speed improvements for the Members Table when using in S3D for the older V1 codes.

31 January 2023

• NEW: Added restraints to AS/NZS 4600-2018.

24 January 2023

• NEW: Added round and rectangular bar sections to AS4100-2020 and NZS 3404-1997.

9 December 2022

• NEW: Support for Tapered I-shapes in AS4100-2020 and NZS3404-1997.

30 November 2022

• NEW: Improved members table by filtering the table when selecting members via the graphics.
• NEW: Ability to apply restraints to members.
• NEW: Restraints will be displayed in 3D graphics.
• NEW: Auto-group restraints.

04 October 2022

• NEW: AS 4100-2020 is now available.
• NEW: AS/NZS 4600-2018 is now available, using the Direct Strength Method (DSM).
• NEW: Member Restraints available for NZS 3404-1997 and AS 4100-2020 which allows users to add pseudo-restraints for more accurate calculations.

20 December 2021

• NEW: New Zealand code (NZS 3404-1997) now available in standalone, beam and S3D.

01 November 2021

• Interaction factors (kyy, kyz, kzy, kzz) can now be manually adjusted for each member in Eurocode.

21 December 2020

• NEW: Download all individual member design reports to a ZIP file.

10 December 2020

• NEW: Indian code (IS 800-2007 LSM and IS 800-1984 WSM) now available in standalone, beam and S3D.

30 September 2020

• NEW: New input data for dealing with member bracing and continuous members.

21 October 2019

• NEW: British code (BS 5950-1:2000) now available in standalone, beam and S3D (beta-stage development).

26 July 2019

• NEW: Cold-formed steel codes now available for USA (AISI S100-12 ASD/LRFD) in standalone, beam and S3D (beta-stage development).

15 July 2019

• NEW: Entry table system for "Design Members" table in "Members" tab. This datasheet behaves similar to MS Excel which should make data-entry a little easier. It is possible to copy/paste via MS Excel also.

24 June 2019

• NEW: T-shapes and Angles now available for design in Eurocode.
• NEW: Grouped elements of S3D are now integrated with the design results. This makes for easier viewing of results for similar members when Groups are used in S3D.

22 May 2019

• NEW: Filter for results table which makes viewing results a little easier.
• NEW: Added "Worst LC" to results so that it's known which load combination is used for the calculations of each member.

17 May 2019

• NEW: T-shapes and Angles now available for design in CSA S16-14.

02 April 2019

• Adjusted NDS^® UI to resolve lagging UI issues with large tables when many members are in the structure.

18 March 2019

• NEW: Added AS1720 (Australian Timber) design code in beta-stage development.

24 October 2018

• NEW: The design module now supports saving/opening files with the file manager. It can be accessed via the "File" menu in the top bar.

18 October 2018

• NEW: NDS^® 2018 ASD/LRFD now available in Standalone, S3D and Beam.

24 September 2018

• NEW: The new Material Database has been integrated.

17 April 2018

• NEW: The braced length (Lb) can now be manually set in Integrated (Beam and S3D) mode via the members table.

9 April 2018

• NEW: Full design reports with all related design calculations are now available for AISC 360.
• NEW: Sections do not need to be added from the database to be designed. General sections can now be designed provided that they are a supported shape.

18 December 2017

• NEW: CSA S16-14 now available in Standalone, S3D and Beam. I-shape, HSS and channels can be designed in this first release.

1 November 2017

• NEW: AS 4100-1998 now available in Standalone, S3D and Beam. I-shape, HSS and channels can be designed in this first release.

25 October 2017

• NEW: Eurocode 3 check for Combined Buckling (Bending + Compression).

12 September 2017

• NEW: Eurocode 3 now available in Standalone, S3D and Beam. I-shape, HSS and channels can be designed in this first release.

6 July 2017

• NEW: AISC 360-10 LRFD provision now available in Standalone and S3D Integrated. All shapes can be designed (I-Shapes, T-Shapes, Rectangular HSS, Round HSS, Channels and Angles).

22 June 2017

• NEW: T shapes now available for design in AISC 360-10.

14 June 2017

• NEW: Channels and Angles now available for design in AISC 360-10.

6 June 2017

• Fixed issue with DNV Imperial units.
• Fixed issue where multiple DNV Lifting Nodes could not be specified in S3D Integrated.

1 June 2017

• NEW: Released the first SkyCiv Design Codes which can be used in standalone or integrated with analysis (SkyCiv S3D).
• NEW: AISC 360-10 available (only I-Shapes, Rectangular HSS, Round HSS at this stage).
• NEW: DNV 2-7.1 available.

08 October 2026

Auto Design: Automatically design the cheapest connection using SkyCiv's cost model.

21 September 2026

Download Connection Detail PDF with Title Block.

03 September 2026

Undo/Redo Feature.

31 August 2026

	Export to CloudCad
	Dynamic SVG reporting

13 August 2026

	Click connection elements and open relevant input fields.
	Can edit dimensions directly on the renderer.
	Can now download model in IFC.

31 July 2026

Dimensions now visible in the renderer.

24 June 2026

	Extended end plate moment connection with beam and column stiffeners for AISC.
	Flush end plate moment connection with column stiffeners for AISC.

03 June 2026

	Config Switch Feature - the ability to switch configuration of the same type within the module while retaining member and loading info.
	Rotate Column Feature - the ability to rotate column within the module while retaining all data.
	Extended End Plate Moment Connection for AISC.

21 May 2026

AISC 360-16 Channel to Channel Single Plate Connection.

11 May 2026

	Updated UI appearance to be consistent with other SkyCiv modules.
	Assembly and/or fixtures are now highlighted in the graphics when they're selected in the UI.
	Improved startup rendering speed.
	Added default values for members when shape is changed.
	Added default values when switching from bolt to weld and vice versa.

16 Apr 2026

	Flush End Plate Moment Connection for AISC 360-16 ASD and LRFD.
	Improved the launcher where you choose your connection. The connection types are now better organised and it should be easier to find the connection you need.

02 Mar 2026

Channel to Channel Fully Welded Connection for AISC 360-16 ASD/LRFD.

03 Dec 2025

• AISC 360-16 Flange Plate moment connection to HSS Column.

20 Aug 2025

• Connection Detailing for Horizontal Bracing AISC 360-16 ASD/LRFD.

24 Jul 2025

• Connection detailing for Vertical Brace Connections AISC 360-16 ASD/LRFD.

04 Jun 2025

• Connection detailing for Chevron Bracing.

30 Apr 2025

• Connection detailing for Knee Bracing.

20 Jan 2025

• Stiffeners for Flange Plate Moment Connection for AISC 360-16.

21 Nov 2024

• Beam Splice Connection for AISC 360-16 ASD/LRFD.

17 Oct 2024

• Horizontal Brace Connection - Single Angle to Beam and Girder for AISC ASD/LRFD.

11 Sep 2024

• Horizontal Brace Connection for AISC 360-16 ASD/LRFD.

19 July 2024

• Chevron Brace Connection for AISC 360-16 ASD/LRFD.

12 June 2024

• Knee Brace Connection for AISC 360-16 ASD/LRFD.

16 May 2024

• Summary Report which is a more concise design report.

24 April 2024

• AISC 360-16 ASD/LRFD Vertical Brace Directly Welded to Column.
• Fixed "Manage Previous Versions" functionality.
• Added warning when input is changed after running design calcs to remind user to re-run design checks.

26 March 2024

• Directly Welded Web Shear and Shear+Axial for AISC 360-16 ASD/LRFD.

15 March 2024

• Vertical Brace Connection - End Plate to Column AISC 360 ASD and LRFD.

22 February 2024

• Vertical Brace Double Angle Connection to Column AISC 360 ASD and LRFD.
• Shear and Shear+Axial End Plate Connection AISC 360 ASD and LRFD.

25 January 2024

• Additional brace shapes on vertical bracing

1. WT shapes
2. Square and Rectangular HSS shapes
3. Brace to Gusset
4. Single Plate to Gusset

16 November 2023

• Vertical Brace Connection

1. Category: Bracing
2. Type: Vertical Brace Connection
3. Design Code: AISC ASD/LRFD
4. Units: English / Metric
5. Orientations: BCF / BCW
6. Column and Beam: W-Shapes
7. Brace: L and 2L shapes
8. Connection to Column: Single Plate Connection

8 September 2023

• Column Splice Connection

1. AISC 360-16 ASD/LRFD.
2. W-Shaped Columns.
3. English / Metric Units.

20 July 2023

• Re-release of Single Fin Plate Connection for EuroCode:

1. Improved calculations and reporting.
2. New beam to beam orientation.
3. New flexible notch dimensions.
4. Added M12 bolts.

26 May 2023

• NEW: Double Angle Connection - Shear+Axial Type.

1. Additional design checks for the axial load.
2. Improved detailed calculation report.

11 May 2023

• NEW: Shear+Axial Single Plate Connection for AISC 360 (Wide Flange Beam to Wide Flange Column Web/Flange and Wide Flange Beam to HSS Column).
• Re-added the integration with S3D. Simply highlight two members in S3D and use Right-click > Launch Connection Design.

20 April 2023

• Re-release of AISC 360-16 Wide Flange Beam to HSS Column Single Plate Connection:

1. New and Improved set of calculations.
2. Now allows both Imperial and Metric unit systems.
3. Now allows both ASD and LRFD.
4. Can now specify bolt holes for both beam and plate.
5. Can now use A307, SC(A) and SC(B) bolts.
6. Bolt diameter from ⅝” to 1 ½”.
7. Bolt arrangement up to 12 bolt rows and columns.
8. Bolt row and column spacing is now flexible.
9. Can now specify erection gap if needed.

04 April 2023

• Updates for AISC 360-16 Flange Plate Moment Connection both BCF and BCW orientations:

1. Can now specify bolt hole type for beam flange, flange plate, beam web and web plate.
2. Updated bolt material which includes SC(A) and SC(B) slip critical bolts.
3. Provided input for bolt gage at flange plate in addition to bolt column spacing.
4. Can now specify erection gap at both flange plate and web plate.
5. At BCW, flange plate will now weld to the support flanges and web.
6. If bolt eccentricity is more than 3 ½”, will auto convert the web plate connection to an extended plate type.
7. Can now specify axial load in addition to shear and moment.
8. Improved calculations and reporting.

01 December 2022

• NEW: AISC 360-16 W-to-W Beam to Beam Shear Connections which includes Single/Double Angle and Single/Double Plate Connections.
• NEW: Additional UI input for both Beam to Column (BCF/BCW) abd Beam to Beam (BBW) AISC shear connections.

1. Flexible coping - top and bottom cope can now be different dimensions.
2. Difference in elevation (for BBW) - positive value if beam is above the girder support and negative if below.
3. Bolt hole type can now be specified for both plies.
4. Slip Critical Bolts can now be selected for single plate and double plate connections.
5. Bolt Arrangement up to 12 bolt rows and columns.
6. Erection gap for single plate and double plate connections for better fit in the field as necessary.
7. Specify different weld sizes for double plate connections. Can specify One-Sided or Back-to-Back on one of the plates.

29 September 2022

• Updated calculations for AISC W-to-W shear connections by making the report more presentable and adding more checks that include:

1. Detailing Limitations
2. Bolt Group Capacity (Now using ICOR)
3. Weld Group Capacity (Now using ICOR as well)
4. Bolt Bearing / Tearout
5. Block Shear
6. Shear Yielding/Rupture
7. Angle/Plate flexure using Double Coped Procedure
8. Shear and Moment Interaction
9. Cope Checks
10. Ductility Checks

01 September 2022

• NEW: IPE, IPN, HD, HE/HL and HP shapes can now be used for the beam or column in Eurocode. Previously only UBs and UCs from the British code could be used.

30 June 2022

• NEW: AS4100 UC to UB shear connections now available including Web Side Plate, Flexible End Plate and Single/Double Angle.

06 February 2022

• NEW: Version 2 of Connection Design UI. Renderer updates immediately when making changes. UI is more friendly and easier to use overall.

06 March 2019

• Fixed an issue with R1 dimension controlling opposite (RE) dimension in some cases.
• Fixed some styling issues when used in standalone mode.
• Added helpful prompt for user to click "Render" button to utilize the right side.

November 2018

• NEW: Initial release of SkyCiv Connection design can be used as a standalone software or within SkyCiv Structural 3D (S3D).
• NEW: AISC 360-10 ASD/LRFD available for "W-to-W" and "HSS-to-W" shear and moment connections.

10 November 2023

• Added slender force table validation.

26 September 2023

• NEW: ACI318 now supports metric units including in the detailed reports.
• NEW: Added IS 456 - 2000 AMD5 design code for designing concrete members with non-prestressed reinforcement in accordance with Indian Standard (Plain and Reinforced Concrete - Code of Practice (Fourth Revision)).
• NEW: Added NSCP C101-15 design code for designing concrete members with non-prestressed reinforcement in accordance with the National Structural Code of The Philippines.
• NEW: Design Summary Report is now available. It is one report which summarizes the results of all beams/columns.
• Several bug fixes and improvements.

06 May 2023

• NEW: In S3D you can now assign reinforcement layouts to many members at the same time by selecting members with the mouse in the graphical window or by one of the select options "Select by Section/Group" and "Select by Layout".
• NEW: Added N-M interaction diagram in the individual design report for all design codes in both standalone and S3D.
• NEW: Added slenderness check for columns in standalone mode.

16 July 2020

• NEW: Added ACI318 2019 code.

20 November 2019

• NEW: Added "Optimize" button that will automatically design and optimize RC beams and columns.

15 July 2019

• NEW: Added AS 3600-2018 which replaces AS 3600-2009.

13 May 2019

• NEW: Added BS 8110-1997 for Standalone, SkyCiv Beam and SkyCiv S3D.

v6.9.0 - 07 Oct 2026

	Added combined MWFRS and Components & Cladding wind load calculations for enclosed and open buildings using ASCE 7-10, ASCE 7-16, ASCE 7-22 and NSCP 2015.
	Added damping ratio input for solar panels and updated validation logic for ground-mounted solar panels under ASCE 7-22.
	Restructured the Results to improve navigation, clarity and presentation of design results.
	Added the reports button to the main menu for more consistent and intuitive access to reports.
	Updated default wall condition and type for CFE design code wind parameters.
	Improved the algorithm in detecting building dimensions in S3D models.

v6.8.0 - 01 Sep 2026

	Added automatic all-direction worst-case topography handling and wind pressures calculation for NBCC 2015 and NBCC 2020.
	Enhanced the design code modal with an integrated file manager and upload functionality.
	Moved wind, snow, and seismic site inputs directly to the Site Data section for quick access when expanding site data details.
	Updated load calculation reports to default to a cleaner map screenshot generated directly from the UI.
	Included source references and provenance notes for terrain exposure category detections in the site analysis report.
	Added visual highlighting of the worst-case wind direction row after setting the pressure values in the wind data table.
	Added functionality to load topography data for all directions simultaneously from saved data and a loading state indicator to the elevation chart.
	Updated summarized wall Components & Cladding (C&C) pressures for leeward and windward walls across ASCE 7 and NSCP 2015.
	Updated terrain boundary distance calculation to enforce a maximum upwind tracking limit of 50 km for AS 4055.
	Fixed the formula used to calculate projected wall areas for elevated buildings in ASCE 7-22 wind calculations.
	Fixed calculation of the shape coefficient for roof angles equal or less than 15 degrees to return 0 in EN 1991 snow load calculations.
	Fixed the wind class evaluation assignment for Terrain Categories C and D in AS 4055.
	Fixed a bug causing map drawings to fail to clear optimally when toggling the worst direction button mode.

v6.6.0 - 06 Jul 2026

	Integrated building footprint data from Overpass API and Microsoft Global Footprint for improved terrain analysis to automatically determine the Exposure Category for ASCE 7 and NSCP 2015 and the Terrain Category for AS/NZS 1170.2. This is also includes an option to use AI model for building detection for improved accuracy as necessary.
	Enhanced the seismic parameter UI with a direction toggle for X and Z axes for AS/NZS 1170 seismic load calculation.
	Added support for AS/NZS 1170 wind loading calculations for 180° and 270° directions.
	Fixed a bug in the range checker for input validation.
	Corrected an issue with saving the map image when using combined building datasets.
	Fixed input error handling and styling for seismic parameters.

v6.4.0 - 08 May 2026

	Improved project unit auto-selection for ASCE 7-10 and unsupported code workflows.
	Updated open-frame distributed load for ASCE 7 wind load calculations. Should now be only using the elevation data for distributing the velocity pressure across the frame height.
	Added automatic open-frame maximum height detection in Open Frames - ASCE 7 wind load calculation in S3D.
	Optimized map server functions for better performance.

v6.3.3 - 30 Apr 2026

	Updated AS 1170.4 and NZS 1170.5 seismic input ranges.
	Added validation for roof height in unbalanced cylindrical roofs using EN 1991-1-3 snow load calculation.
	Fixed conversion of velocity pressure value in ASCE 7 wind load calculation for freestanding wall/solid signs in S3D results summary.

v6.3.2 - 23 Apr 2026

	Added front-face load and pressure diagram functions for solar panel ASCE 7 wind load calculations.
	Updated min/max range of seismic input parameters for NZS 1170.5.
	Bugfix on inverted cylindrical roof SVG figure for EN 1991 snow load results.
	Fixed blank pages appearing in generated load reports.
	Set calculation of nominal area An to imperial for consistency in the formula used in Figure 29.4-7 of ASCE 7-16/ASCE 7-22.

v6.3.1 - 14 Apr 2026

	Improved load generation navigation bar responsiveness on all screens
	Enhanced load button styling with improved visual feedback
	Fixed unintended 3D screenshot capture during save and report operations

v6.3.0 - 10 April 2026

	Fixed min-max range for input field using imperial units specifically for ASCE 7.
	Bugfix on Project Details not being saved/loaded.
	Removed default values for optional input fields.
	Removed Save buttons in Project and Site Input. Changed these to autosave mode.
	Disabled resetting of 3D render view when the structure input are changed.

v6.2.0 - 07 April 2026

	Added a “Download All PDFs” action so users can download all Wind, Snow, and Seismic detailed reports at once.
	Added visualisation of building openings in the 3D model.
	Added 3D rendered structure images to the load report outputs.
	Added wind rose visualisation in the 3D model together with orthogonal axis orientation inputs for building, freestanding wall, and solar panel structures for AS/NZS 1170.2.
	Added smarter default values across Site, Structure, Wind, Snow, and Seismic inputs based on the selected design code and structure type.
	Added location-based default design code selection and hid the units dropdown except where ASCE 7 Metric and Imperial options apply.
	Set the 3D render as the default structure viewer and moved the 3D render report option into the report settings panel.
	Moved the Calculate Loads and Download Report controls to the right pane and refreshed the standalone navigation layout with clearer load calculation emphasis.
	Improved the apply loads workflow with dedicated tabs for spectral loads, node assignments, and plate assignments, and enhanced load assignment behaviour for wind, snow, and seismic loads.
	Updated the map infowindow to show formatted address, coordinates, and site details, and improved map interaction with scroll zoom and disabled double-click zoom.
	Enhanced validation with inline error styling, clearer messages, restored valid UI states, and expanded min/max checks across wind, snow, seismic, site, and structure inputs.
	Fixed base shear table totals in wind reports by correctly treating summed values as numeric inputs. Fixed summation of forces in seismic columns.

v6.1.2 - 15 Feb 2026

	Added Apply Loads functionality - added feature to add 5 nodes for wall surfaces.
	Added sync node IDs from applied Load Generator loads in the model. Users can now sync the IDs from the edited area loads especially if the node ID order needs to be edited to fix area load variance.

v6.1.1 - 12 Feb 2026

Bugfix on SVG figure for drifted snow load on obstructions and projects for AS/NZS 1170.3 snow load calculation.

v6.1.0 - 09 Feb 2026

	Added Delete All Special Roof Shapes button data for EN 1991 and NBCC 2015/2020 snow load calculation.
	Added Clear Floor Weights button for seismic load calculation.
	Added Highlight All Nodes/Plates buttons for wind and snow pressure assignments in S3D integration.
	Added option to search for NBCC Climate Data Points for NBCC 2015/NBCC 2020 to double check obtained data from the SkyCiv map database.

v6.0.4 - 27 Jan 2026

	Bugfix on saved member data not being loaded for open frames wind load calcualtion used in S3D.
	Removed Gable Roofs unbalanced snow load case in NBCC 2015/2020 snow load calculation. The unbalanced snow load case will now be automatically calculated based on the selected roof profile, specifically for gable and hip roof.
	Changed the unbalanced snow load case in NBCC 2015/2020 snow load calculation to Special Roof Shapes option.
	Updated input figure for multilevel roof unbalanced snow load case in NBCC 2015/2020 snow load calculation.
	Added notification alert when input dimensions in Special Roof Shapes are larger than the main building dimensions.
	Updated and fixed some input validations.

v6.0.3 - 20 Jan 2026

	Bugfix on mean roof height formula for circular tanks/bin using ASCE 7-16/7-22 wind load calculations. Previous version has wrong formula and had been yielding higher value of mean roof height, hence, higher design wind pressures.
	Added the Ta formula for NBCC 2015 and 2020 in the structure system option. Users will now be able to know the Ta formula being used in the calculation.
	Removed the "Consider Sliding" option in the multilevel roof cases for NBCC 2015/2020 snow load calculation.
	Reduced and hid the calculation steps for Cladding pressures in wind load calculation Circular Bins/Tanks using ASCE 7-16 and ASCE 7-22. Generated report should now

v6.0.2 - 16 Jan 2026

	Bugfix on loading the saved seismic weights data for seismic load calculation.
	Bugfix on loading the saved building openings and wall roughness data.
	Updated Design Code options - sorted it by country and edition.
	Updated color scheme and opacity of projected area in Node Entry table in S3D.
	Updated results figure for ASCE 7-16/ASCE 7-22 Wind Load Calculation for Truss Tower. It should now show the resultant wind forces dynamically. Also updated and simplified the calculation of net tributary area used.
	Changed Redundancy Factor input to dropdown choices of 1.0 and 1.3 instead on input field as per ASCE 7 seismic load calculation.
	Added warning notification for undefined Ground Snow Load when Snow Load Calculation is checked for ASCE 7-22 snow load calculation.
	Add notification for rooftop equipment projected area values when these are larger than the overall projected area from building dimensions - for ASCE 7-16/ASCE7-22 wind load calculation.

v6.0.1 - 08 Jan 2026

	Bugfix on showing headers in seismic results. Sorted forces from highest elevation to lowest in vertical distribution and overturning moment forces.
	Hid Thermal Resistance of Roof Parameter by default using ASCE 7-22 snow load calculation. This will show when Thermal Condition is equal to All Other Structures to calculate for Thermal Factor Ct.

v6.0.0 - 07 Jan 2026

	Bugfix on pressure conversion for open frames member load for ASCE 7-16 and 7-22.
	Bugfix on issue on summation of Fi and wi for diaphragm forces for ASCE 7-16 and 7-22.
	Improved and added input validation checks.
	Updated wind parameters for all directions using AS/NZS 1170 wind load calculation - when generated from the UI, it calculateion will no longer depend on the wind source direction selected, and instead will be dependent on the the building orientation angle.

v5.11.2 - 12 Dec 2025

Bugfix on missing roof windward pressure value for ASCE 7/NSCP 2015 integrated area load in S3D.

v5.11.1 - 09 Dec 2025

Added validation checks on seismic load calculation for AS 1170.4 and NZS 1170.5. specifically, this will disable the seismic load calculation for Design Working Life and Importance Level indicated in AS/NZS 1170.0 which seismic loads are not required.

v5.11.0 - 01 Dec 2025

Updated validation checks on site elevation below sea level.

v5.10.1 - 18 Nov 2025

	Added EN 1991 Freestanding wall wind load calculation.
	Added special roof shape - EN 1991-1-4 + National Annexes snow load calculation for Cylindrical roof.
	Added special roof shape - EN 1991-1-3 + National Annexes snow load calculation for snow overhanging the edge of a roof.
	Added special roof shape - EN 1991-1-3 + National Annexes snow load calculation for drifting against obstructions - flat roof using Annex B.
	Added special roof shape - EN 1991-1-3 + National Annexes snow load calculation for drifting against obstructions - pitched roof using Annex B.
	Added special roof shape - EN 1991-1-3 + National Annexes snow load calculation for drifting at canopies using Annex B.
	Added special roof shape - EN 1991-1-3 + National Annexes snow load calculation for snow behind parapet on a flat roof using Annex B.

v5.10.0 - 03 Nov 2025

Added validation checks on ASCE 7-22 snow load calculation.

v5.9.2 - 27 Oct 2025

Updated wind load diagram for monoslope roof using ASCE 7/NSCP 2015 wind load.

v5.9.1 - 09 Oct 2025

Added schematic diagram of horizontal seismic forces in results.

v5.9.0 - 02 Oct 2025

Bugfix on AS/NZS 1170 solar panel file loading.

v5.8.4 - 26 Sep 2025

• Updated seismic data for Australia using AS/NZS 1170.4.

v5.8.3 - 22 Sep 2025

• Bugfix on AS/NZS 1170.2 cladding pressure calculation for 90 and 180 degrees. Previous calculated values were using h/d instead of h/b which resulted in incorrect external pressure coefficients for roof surfaces.
• Bugfix on AS/NZS 1170.2 freestanding wall/hoarding calculation. Previous calculated forces were conservative as the pressures are multiplied to the total area instead of b and 2c for 45° and 90°.
• Bugfix on AS/NZS 1170.2 cladding pressure calculation using Kl = 1.0. Previous calculated values do not reflect the correct value using Kl = 1.0 and still uses Kl for other zones (Kl > 1).
• Enabled string member IDs for open frames using ASCE 7-16/7-22.

v5.8.2 - 15 Sep 2025

• Bugfix on AS/NZS 1170.2 freestanding wall SVG graph.

v5.8.1 - 08 Sep 2025

• Updated design wind speed used in AS/NZS 1170 freestanding wall for 0 and 90 degrees. Previous calculation is conservative and uses sector value of 45 degrees for 0 and 90 degrees, which should be 22.5° to account for 45° angles.

v5.8.0 - 02 Sep 2025

• Added pressure diagrams for ASCE 7, NSCP 2015, EN 1991, and AS/NZS 1170 for open buildings. Can now easily visualize pressure results applied to the roof.

v5.7.4 - 20 Aug 2025

• Bugfix on calculation of a in ASCE 7-16/7-22 cladding for flat roof and least dimension is greater than 300 ft (90 m) as the maximum limit. Previous calculation is setting the value to the maximum limit, making the previous results conservative for corner/edge zones.

v5.7.3 - 19 Aug 2025

• Bugfix on structure data output for freestanding walls - specifically on reporting the wall width. No effect in the final calculated pressures/forces.

v5.7.2 - 15 Aug 2025

• Bugfix on wind pressure on roof overhang (soffit) for ASCE 7 and NSCP 2015 - removed pressure contribution from internal pressures.
• Bugfix building dimensions detection in S3D.
• Added reselection of country value if the selected country in AS/NZS 1170 value is different from the country obtained from the map data. This should automatically reselect the country dropdown using the country value from the map database.
• Automatic selection of worst direction for AS 4055 if Design Inputs for All Directions are generated.
• Added hip and monoslope roof results figure on wind load calculation for components/cladding using AS/NZS 1170.2.

v5.7.1 - 07 Aug 2025

• Bugfix on showing Export Response Spectrum Data button for AS 1170.4 seismic calculation used in S3D for Earthquake Design Category I. This button should not show as the Response Spectrum data is not required for EDC I.

v5.7.0 - 06 Aug 2025

• Added snow load on Multispan Roof using EN 1991-1-3 snow load calculation.
• Updated Germany snow load - for Harz mountain region - should be using DIBT snow load.
• Bug fix on elevation data being captured from the Load Generator to S3D wind loads, specifically, windward pressure.
• Enabled snow load cases using Annex B for UK, Ireland, Sweden using EN 1991-1-3 snow load calculation.
• Improved detailed report for EN 1991-1-3 snow load calculation.
• Bug fix on interpolation formula for calculating truncated drifted snow load using EN 1991-1-3 snow load calculation.
• Bug fix on Exposure Factor used in calculating snow load using EN 1991-1-3 snow load calculation for Belgium. Previous calculation uses 1.2 for Sheltered but should have been 1.0 for all topography.
• Added limit to mu_w value to 2.0 for snow load on roof abutting to taller construcction works for EN 1991-1-3 snow load calculation for Sweden. Should be in effect if h is greater than 5m and b2 is less than 3m.

v5.6.2 - 30 Jul 2025

• Added alert to users if they want to automatically apply the generated loads in S3D.

v5.6.1 - 28 Jul 2025

• Changed unbalanced snow load cases to "Special Roof Cases" for EN 1991-1-3 snow load calculation.
• Added figure to visualize overall wind force applied to free roof using EN 1991-1-4 wind load calculation.
• Improved autodetection of building dimensions.

v5.6.0 - 24 Jul 2025

• Integrated AS 4055 wind load calculation for residential buildings (using SkyCiv Quick Design).
• Added NBCC 2020 wind load calculation for freestanding wall.
• Updated results figure for NBCC 2015/2020 wind load calculation for low-rise building. Corrected and updated the wind direction arrows.
• Fixed building length/building width dimension diagram for rooftop solar panel using AS/NZS 1170.2 wind load calculation.
• Added roof opening location input for AS/NZS 1170.2 wind load calculation for more appropriate internal pressure values when there is a large opening on the roof.
• Added Serviceability Limit State (SLS) parameters for for NZS 1170.5 seismic load calculation. Users can now generate SLS results.
• Added automatic determination of Action Combination factors for AS/NZS 1170.2 wind load calculation based on the building openings data input. In the previous UI, you will need to manually select the Kce/Kci values for external and internal pressures, respectively. With this version, you will just need to define the building openings data.
• Updated figures for freestanding wall - AS/NZS 1170.2 wind load calculations. Added SVG figure to visualize the corresponding forces applied per wind load direction.
• Updated recommended snow bulk density for Germany and Romania using EN 1991-1-3 snow load calculation.
• Transferred calculation of unbalanced snow load on monopitch and duopitched roof using EN 1991-1-3 snow load calculation. In the previous version, you need to define this in the Unbalanced/Drifted cases input. With the current version, this will now be a default result.
• Updated limits for strucutural performance (Sp) and ductility (μ) factors for AS 1170.4 seismic load calculation. Sp is now limited to maximum value of 0.77 and μ to a maximum value of 3.0.
• Added snow load table data from Table 5.2 of AS/NZS 1170.3 snow load calculation for strutures in Australia (alpine or sub-alpine). Users should now be able to select and adopt the values from the Table.
• Removed design situation input parameter in EN 1991-1-3 snow load calculation.
• Removed Save Nodes/Plates Data button in S3D.
• Removed Cladding Permeability input for AS/NZS 1170.2 wind load calculation.
• Added new input and results figure for monoslope roof - for rooftop solar panel using AS/NZS 1170.2 wind load calculation. Removed hip roof profile option.
• Updated seismic zone factor Z obtained from our map database using AS 1170.4 seismic load calculation. Previous value is returning a conservative value of Z equal to 0.09, which should have been 0.08 for locations outside the hazard zones based on Figure C3.2 of AS 1170.4 Commentary 2nd Edition (2021).
• Updated calculation of Kl for internal pressures, as necessary, for buildings with roof opening using wind load AS/NZS 1170.2 wind load calculation for claddings. Previous value will only use Kl = 1.0 which may not be accurate for cases with roof openings.
• Added cladding pressures for cases where Kl = 1.0 as "other surfaces" using wind load AS/NZS 1170.2 wind load calculation for claddings. Previous result only show cladding pressures where Kl > 1.0.

v5.5.5 - 23 Jun 2025

• Updated API json saved input format for NBCC 2015/2020.
• Added "Standard Used for Determining Probability" input to AS/NZS 1170 load calculations for structures in Australia.
• Fixed apply loads in S3D for IS 875 wind load calculations.

v5.5.4 - 18 Jun 2025

• Automated selecting worst direction when "Modify Design Wind Inputs for All Directions" button is clicked.
• Bug fix on inconsistent topogrpahy classification when from a file loaded vs the original data.
• Bug fix on showing notification for validation of solidity ratio fo freestanding wall ASCE 7 wind load calculations.

v5.5.3 - 16 Jun 2025

• Added an accessible save input button on the upper right of input parameters.
• Improved saving/loading of user-edited topo points in elevation chart.

v5.5.2 - 12 Jun 2025

• Updated Terrain Category info button for EN 1991-1-4 and SANS 10160-3.
• Corrected some mispelled texts.

v5.5.1 - 11 Jun 2025

• Added highlight of current importance level selected in the NCC/BCA site data for Australian structures.
• Updated design wind speed values for 0, 45, and 90 degrees wind direction to AS/NZS 1170.2:2021 wind load calculations for freestanding walls/hoardings. The calculation will now use the maximum design wind speed values for supplementary angles based on the corresponding β: from θ = orientation angle and orientation angle for θ = 0° from θ = orientation angle + 90° and orientation angle + 270° for θ = 90° and from θ = orientation angle + 45°, orientation angle + 135°, orientation angle + 180°, and orientation angle + 225° for θ = 45°.
• Added pressure results in AS/NZS 1170.2:2021 wind load calculation for freestanding walls/hoardings. Also removed unnecessary Cpe/Cshp values, which should now reflect the Cpe/Cshp values appropriate to the wall dimensions for θ = 45° and θ = 90°.

v5.5.0 - 05 Jun 2025

• Added Finland Snow Load Calculation conforming SFS EN 1991-1-3 National Annex (National Building Code of Finland, 2019).
• Added Finland Wind Load Calculation conforming SFS EN 1991-1-4 National Annex (National Building Code of Finland, 2019).
• Added Portugal wind load calculation conforming for NP EN 1991-1-4:2010 + National Annex.
• Updated the importance level description info table for Australia structures. Also show the importance level description from the National Construction Code of Australia for Australian building structures.
• Separated wind pressure results for 0, 90, and 180 degrees for Open Monoslope roof using As/NZS 1170.2.
• Updated the building openings data. You can now put(“enter”) the area of the opening for each wall surface and it will automatically calculate the permeability. An impermeable wall has less than 0.1% opening for each surface, a permeable wall has 0.1% to 0.5% opening, and > 0.5% for large openings.
• Updated Building Openings data input - now automatically determines the permeability based on the opening (“percentage”) for each wall/roof surface and also includes Average Elevation of Opening.
• Added warning (upon clicking Calculate Loads) on not selecting the worst wind direction if the Design Wind Speed for All Directions is generated.
• Added validation of solidity ratio for ASCE 7 wind load calculations. Set it to 0.7 to 1.0.
• Removed BETA on Lat/Lng input.
• Added Snow Data header in Site Data.
• Updated validation checks on floor elevation data for Wind Load calculations (Earthquake Load?) - added limitation of value which should not exceed the mean roof height/reference height/ground to top of roof.
• Added warning notification for Ru value when using NZS 1170.5 seismic data for structure with Design Working Life of 100 years or more and Importance Level 4. Users will need to manually put the Ru value.
• Rephrased notification message for Site Seismic Data when using ASCE 7-16 or ASCE 7-22 for clarity.
• Updated Design Wind Speeds for All Directions table results. You can now do bulk edit of terrain category and shielding multiplier for AS/NZS 1170.2 and exposure category for ASCE 7 and NSCP 2015. It will automatically recalculate the worst wind source direction.
• Removed hr input for unbalanced snow load on lower roof - AS/NZS 1170.3 snow load calculation. This will now be automatically calculated.
• Added an option to use Annual Probability of Exceedance values based on National Construction Code of Australia for Australian building structures - for wind, snow, and seismic load calculations.
• Fixed texts that show AS1170 and changed it to AS/NZS 1170.2 on wind load parameters.
• Updated Annual Probability of Exceedance (AS/NZS 1170.2) for Non-cyclonic regions in Australia with Design Working Life of 50 years and Importance Level 1 in determining the Basic Wind Speed. Previous calculation uses 1/200 instead of 1/100, making the previous version a little conservative with a difference of only 1 m/s.
• Bug fix on highlight plate function in S3D.
• Updated calculation of drag force for walls and hoarding in AS/NZS 1170.2 wind load calculation. Previous value was only considering one surface area, now considers the front and back wall surfaces.
• Updated calculation of force coefficients Cf Case C for freestanding walls - now considers reduction factor from solidity ratio. Previous version yields a higher value of Cf for Case C as the reduction factor is not being multiplied.
• Updated calculation of net pressure coefficients Cpn for Free Roof (Open) - Monoslope Roof (wind direction equal to 90 degrees) using AS/NZS 1170.2. Previous value was not calculating the Cpn correctly and was using the roof angle instead of using a roof angle equal to 0° for wind direction equal to 90°.
• Bug fix on calculation of force coefficients for Open Frames using ASCE 7-16/7-22. Previous calculation resulted in Cf values from Figure 29.4-2 for ratio of solid area to gross equal to 0.3 to 0.7 - which was giving a conservative value for rounded members but insufficient value for flat-sided members.
• Fix for typo on minimum value of kpZ showing the Annual Probability using AS/NZS 1170.0 for seismic load calculation using AS 1170.4. No change in results.
• Fixed Lee multiplier Mlee for locations in Ruapehu, New Zealand for AS/NZS 1170.2 wind load calculation. Previous results only showed Mlee for either SE or NW depending on the location of the structure. It should now be applied to both directions.
• Fixed building orientation value for AS/NZS 1170.2 wind load calculation on open roof, solar panel, and freestanding wall. Previous version only considers the wind direction 0° is the same as the selected wind source direction.
• Disabled AS 1170.4 seismic load calculation for 5 years or less Design Working Life and Design Working Life of 25 years and Importance Level 1 in accordance with Table F2 of AS/NZS 1170.0.
• Disabled NZS 1170.5 seismic load calculation for Construction equipment.
• Bug fix on max value of product of Z and R in calculation Elastic Site Spectra for NZS 1170.5 seismic load calculation.
• Bug fix on C_dir value for Directional Factor 120° for UK/Ireland EN 1991 Wind Load Calculation. Previous value is conservative at 0.8 - corrected to be 0.73.
• Updated National Annexes nomenclature in detailed load report for EN 1991-1-3 snow load and EN 1991-1-4 wind load calculations.
• Bug fix on approximate base shear calculation for EN 1991. Previous value was not considering the CsCd factor and the corrected area of the wall for the monoslope roof (for Zone E pressure).
• Updated calculation of Structural Factor c_s for wind load calculation in accordance to BS/I.S. EN 1991-1-4 National Annex. Previous value was not updating correctly and was always stuck to Zone A, which yields to conservative value.
• Removed the optional adjustment factor for the snow shape coefficient indicated in Figure 6.5(b) and 6.5(c) for lower roof angle > 10° for AS/NZS 1170.3 - "the shape coefficient may be multiplied by (60 - α2)/50." As indicated in the code, this is only an optional factor. Removing this will make the calculation a little conservative
• Updated input and results figure for open monoslope roof and solid signs- AS/NZS 1170.2 wind load calculation.
• Updated input and results figure for open monoslope roof and solid signs- - ASCE 7 wind load calculation.
• Updated input and results figure for open monoslope roof and solid signs- - NSCP 2015 wind load calculation.
• Updated calculation of internal pressure coefficient for structures in Australia located in Regions C and D with height of less than 25m. A minimum ratio of the sum of opening areas on one surface to total open area of other walls and roof surfaces equal to 2.0 will now be used in the calculation to account for the debris impact in these regions as required in the AS/NZS 1170.2.
• Optimized wind speed/snow load interpolation algorithm.
• Updated accidental snow load results for Germany, Ireland, and United Kingdom using EN 1991-1-3.
• Added undrifted accidental snow load results for EN 1991-1-3 if applicable.
• Updated calculation of design wind speed for walls and hoarding in AS/NZS 1170.2 wind load calculation. Previous version was using +/- 45° sector in determining the design wind speed, which resulted to conservative value.
• Added calculation of design wind speed for 45° and 90° walls and hoarding in AS/NZS 1170.2 wind load calculation. Previous version was using the one value – V_des,0°.
• Updated calculation of net pressure coefficients for walls and hoarding in AS/NZS 1170.2 wind load calculation. Now includes the negative Cpn values instead of showing one (absolute) value.
• Enabled snow load calculation for roof abutting closer to obstruction, and obstructions and projections using Annex B EN 1991-1-3 for France.
• Added results for frictional drag forces for AS/NZS 1170.2 wind load calculation. In relation to this, added new input parameters for wall and roof roughness in wind load parameters.
• Updated criteria for Hill-shape multiplier for AS/NZS 1170.2 wind load calculation based on AS/NZS 1170.2 Amendment 2. If the height of terrain H is less than 40% of structure height or less than 5 m, therefore, Hill-shape multiplier Mh is equal to 1.0.
• Updated cyclonic regions for AS/NZS 1170.2 wind load calculation - which includes Regions B2, C, and D based on Amendment 2.
• Updated Cp,e for hip/gable downwind surface from Table 5.3(C) for AS/NZS 1170.2 wind load calculation - based on Amendment 2.
• Updated wind map data for AS/NZS 1170.2 wind load calculation based on AS/NZS 1170.2 Amendment 2. Revised region B2/C/D in Western Australia.
• Updated terrain sectors drawn in the map image in a detailed report. Shape should now be a perfect circle instead.
• Added Earthquake Design Category in the AS 1170.4 seismic load calculation results.
• Shown calculation of ground snow load for AS/NZS 1170.3 for improved clarity in calculation used.
• Refined/extrapolation ASCE 7-16 and ASCE 7-22 wind contours for better accuracy of wind speed values.

v5.2.1 - 05 Mar 2025

• Bug fix on Multilevel roof snow load case input parameters for NBCC 2015 Snow Load Calculation. Fixed validation of height of parapet.
• Bug fix on building orientation angle on Open Buildings for AS/NZS 1170.2 Wind Load Calculation. Should now be able to use custom building orientation instead of just taking the value as parallel to the wind source direction.

v5.2.0 - 03 Mar 2025

• Bug fix on calculation of design wind pressures on windward wall surfaces on various reference heights. Previous version uses standard method to calculate the design wind pressures at the level of mean roof height, then using these top pressures and linear interpolation to estimate wind pressures at lower reference heights. In this version, design wind pressures at all reference heights are considered separately using the same standard method in AS/NZS 1170.2:2021. Plus, tabulated values are added for design wind pressures acting on all reference heights on windward wall surfaces for more information. With this bugfix, there will be an increase (2-5%) of total base shear for windward and leeward pressures.
• Added calculation of design wind pressures on underside of elevated buildings using AS/NZS 1170.2:2021 wind load calculation.
• Removed BETA tags on design codes.

v5.1.2 - 20 Feb 2025

• Bug fix on calculation of hip roof Cpe values in AS/NZS 1170.2. Previous version shows only upwind and downwind pressures. It will now show crosswind pressures for 0 and 90 degrees direction.
• Bug fix on calculating the internal pressure coefficients for structures with large openings on roofs in AS/NZS 1170.2. Previous value is conservative.
• Bug fix on incorrect display of Cshp,e values in the final table of AS/NZS 1170.2 detailed report. No effect on previous calculations.
• Added Sweden wind and snow load calculation using BFS 2022:4 (EKS 12)
• Changed Design Code selector for AS/NZS 1170 to AS/NZS 1170 series.
• Updated input figures in defining buildings opening data in AS/NZS 1170.2.
• Changed IS 875 design code option to IS 875:2015.
• Added check valid limitation for ratio of mean roof height and minimum building dimension for AS/NZS 1170.2 wind load calculation. Maximum ratio should not be greater than 6.0 as specified in Section 6 of AS/NZS 1170.2.
• Added alert message to regenerate the Design Wind Speed for All Directions when topo points are changed. Added automatic function to update this table when the load is generated.
• Bug fix on clearing terrain sectors on Google Map generated when the location is moved or changed.
• Added Cpi = 0 load case for structures with large openings using AS/NZS 1170.2. wind load calculations.
• Updated and refined BS EN 1991-1-4 UK Wind Speed map data. Previous version shows conservative wind speed values on some locations in UK using BS EN 1991-1-4 wind load calculation.
• Added functionality to Shielding Multiplier for AS/NZS 1170.2 - now you can edit this value and update the data in Design Wind Speed for All Directions.

v5.1.1 - 07 Feb 2025

• Bugfix on disabled seismic load button when file is loaded with wind or snow load only.

v5.1.0 - 04 Feb 2025

• Added information on wind speed for AS/NZS 1170.2 for Australia and New Zealand Locations.
• Bugfix on calculation of Open area/volume factor, Kv parameter for AS/NZS 1170.2 wind load calculations.
• Updated references in the detailed report of AS/NZS 1170.2 wind load calculations.
• Improved calculation of Vdestheta for AS/NZS 1170.2 wind load calculations.

v5.0.3 - 27 Jan 2025

• Bugfix on NBCC 2015/2020 interchanged Cp values for 0 and 90 degrees direction for MWFRS.
• Bugfix on loading building orientation parameter from saved/API file - AS/NZS 1170.2.
• Bugfix on calculating Vdestheta - should select the max Vsitbeta from +/- 45deg - AS/NZS 1170.2.

v5.0.2 - 27 Jan 2025

• Initial update on snow load figures in UI report - now using dynamic SVG figures.
• Relayout of detailed load report button - now shown below the results tab for easier access.
• Updated detailed wind load report for EN 1991 - simplified the report to set all formula calculation inline.
• Updated roof pressure results for ASCE 7 and EN 1991 for zero (0) Cp values (which are provided in code as for interpolation purposes) to be combined with internal Cp values to calculate the net pressure.

v5.0.1 - 13 Jan 2025

• Updated snow load calculation for UK conforming to NA+A2:2018 to BS EN 1991-1-3:2003+A1:2015. This updates the drifted snow load for duopitch and monopitch roof, as well as for obstructions and projections using Annex B.
• Updated snow load figures in detailed calculation report - now using dynamic SVG figures.

v5.0.0 - 09 Jan 2025

• Updated snow load map data for Germany EN 1991-1-3 - now using data from DIBT.

v4.11.1 - 16 Dec 2024

• Updated calculation of C&C Roof GCp values for roof angle greater than 7 degrees for building of all heights - ASCE 7-16 and ASCE 7-22.

v4.10.1 - 08 Nov 2024

• NEW: Added SR EN 1991-1-3 Snow Load Calculation for Romania.
• NEW: Added SR EN 1991-1-4 Wind Load Calculation for Romania.

v4.10.0 - 05 Nov 2024

• NEW: Added CTE DB SE-AE Snow Load Calculation for Spain.
• NEW: Added SANS 10160-3 Wind Load Calculation for South Africa.

v4.9.0 - 30 Oct 2024

• Bug fix on result figures for open buildings - ASCE 7 and NSCP 2015.
• Removed displayed minimum roof pressure for open buildings - ASCE 7 and NSCP 2015.

v4.8.3 - 26 Sep 2024

• Enabled AS/NZS 1170.2 wind load for pole with head frame and fixed bugs the detailed wind report.

v4.8.2b - 12 Sep 2024

• Updated Belgium wind load map data (NBN EN 1991-1-4).
• Updated Germany snow load map data (DIN EN 1991-1-3).

v4.8.2a - 11 Sep 2024

• Bugfix on Height to Top of Parapet input not showing in ASCE 7-16/7-22 MWFRS/C&C wind load calculation.

v4.8.2 - 10 Sep 2024

• Updated calculation topographic multiplier, Ct(hi), for internal pressure calculation in NBCC 2015/2020 wind load calculation.

v4.8.1 - 09 Sep 2024

• Added calculation of coefficient of variation for Belgium EN 1991-1-3 snow input.

v4.8.0 - 04 Sep 2024

• Added option to change color of Distance circles (Draw Distance Radii).
• Added sector lines for distinguishing wind source directions (Draw Distance Radii).

v4.7.0 - 26 Aug 2024

• Updated options for type of topography for wind load calculations.
• Added input parameter for eave height (building height) for NBCC 2015/2020 Wind Load Calculations.
• Added function to draw circle with specified radii from the location (Draw Distance Radii button). Can be used in determining Terrain and Exposure Categories. Edit it using the Settings button.
• Added optional input parameter for Upwind Extent of Rough Terrain in calculating intermediate value for Exposure Factor for NBCC 2015/2020 Wind Load Calculations.
• Added warning notification for Enclosure Classification recommended for buildings classified as Post-disaster for NBCC 2015/2020 Wind Load Calculations.
• Added notification in results when Wind Load Calculation for Low-rise building is used in NBCC 2015/2020 Wind Load Calculations.
• Added wind results figure (elevation) to indicate pressures acting on the wall/roof surfaces for tall buildings using NBCC 2015/2020 Wind Load Calculations.
• Updated API version to 2.1 to incorporate changes in building dimensions for NBCC 2015/2020 Wind Load Calculations. Please generate API file from UI for more info.
• Updated France site snow load data from NF EN 1991-1-3/NA/A2 - now uses Google Map data (departement and commune) to determine the ground snow load.
• Updated France site wind load data from NF EN 1991-1-4/NA/A3 - now uses Google Map data (departement and commune) to determine the fundamental basic wind speed.
• Updated Map GeoJSON of France and Germany Wind and Snow Map.
• Added Map GeoJSON values for intermediate zones for Wind (NF EN 1991-1-4/NA/A3) and Snow data (NF EN 1991-1-3/NA/A2) of France.
• Removed exceptional snow load results when using NBN EN 1991-1-3.
• Added function to select the recommended snow unit weight for France and Poland using EN 1991-1-3.
• Added elevation limits for EN 1991 snow load data - (France at 2000 m; Portugal, Germany and Sweden at 1500 m)
• Added elevation limits for AS/NZS 1170.3 snow load data - (New Zealand at 1800 m)
• Added intermediate terrain categories for Germany DIN EN 1991-1-4 Wind Load Calculation - now shows Inland, Coastal, and Island terrain category options.
• Updated Cesl value for Germany DIN EN 1991-1-3 snow load calculations.
• Added font sizes and color options in the settings in generating the UI report.

v4.6.1 - 18 Jul 2024

• Added options to override Cpi values for EN 1991 in Load settings.
• Added options to override orography factor (NF EN 1991-1-4) in Load settings.

v4.6.0 - 16 Jul 2024

• Updated algorithm for topography factor calculation.
• Updated site information for France NF EN 1991-1-4.
• Updated topography options for France NF EN 1991-1-4.
• Added Procedure 1 for Orography Factor calcultation for France NF EN 1991-1-4 in API.
• Updated signboard and pole wind load calculation for EN 1991-1-4.
• Added settings to select site data to include in report.
• Bug fix on Map infowindow shown in report.
• Added validation of topo points in Elevation chart when editing the topography data points.
• Updated CpCg values for NBCC 2015/2020 Wind Load - see documentation for more info.
• Removed detected terrain and will just calculate the topography factor/multilpliers based on topo points.
• Some UI bug fixes

v4.5.2 - 25 Jun 2024

• Updated hide/show functionality of Load Button Checkboxes.

v4.5.1 - 21 Jun 2024

• Added Return Period and Coefficient of Coefficient of Variation of Annual Max. Snow Load parameters for calculating adjusted ground snow load in EN 1991-1-4 Wind Load Calculations.
• Enabled ASCE 7-22 Snow and Seismic Load Calculations for manual site data input.

v4.5.0 - 18 Jun 2024

• Re-release of ASCE 7-22 Snow and Seismic Load Calculations for buildings.
• Added option to use Lat/Lng values in getting site data.
• Added some prompts to Apply Loads in S3D.
• Added calculation of Design Spectral Acceleration Parameters options for ASCE 7-16 Site Seismic data.
• Added Return Period parameter for calculating Probability Factor in EN 1991-1-4 Wind Load Calculations.
• Some UI bug fixes

v4.4.2a - 23 May 2024

• Bug fix on hiding/showing of load buttons.
• Some UI bug fixes.

v4.4.2 - 16 May 2024

• Updated loading functionality when worst direction is clicked.
• Updated renderer for rooftop and ground solar panel - ASCE 7 and AS/NZS 1170.
• Some UI bug fixes.

v4.4.1b - 08 May 2024

• Updated renderer for grouped circular bin - ASCE 7 and AS/NZS 1170 wind load calculation.

v4.4.1a - 07 May 2024

• UI Update on clearance height input for grouped circular bin - ASCE 7 and AS/NZS 1170 wind load calculation.

v4.4.1 - 06 May 2024

• Updated graph library for Response Spectrum in ASCE 7, AS1170.4, NZS 1170.5, NBCC 2015, and NBCC 2020 seismic load calculation detailed report.
• Updated graph library for design wind speed for all directions in AS/NZS 1170 wind load calculation detailed report.

v4.4.0 - 02 May 2024

• Updated roof wind pressure results for hip roof for ASCE 7 and NSCP 2015.

v4.3.4 - 29 Apr 2024

• Moved Generate API File and Import API buttons to menu bar.
• Updated Import API function to uploading API JSON file.

v4.3.3 - 23 Apr 2024

• Some UI improvements.

v4.3.2 - 18 Apr 2024

• UI improvement to show results that are already generated.
• Improved unbalanced snow load results in ASCE 7 snow load calculations.
• Added calculation of Eh and Ev in ASCE 7-16 Seismic Load Calculation for Buildings.

v4.3.1 - 09 Apr 2024

• Added roof system option for unbalanced snow load on gable roofs - ASCE 7.

v4.3.0 - 05 Apr 2024

• Bug fix on pressure calculation on ASCE 7 Open Frames.
• Fix on edge solar panel definition for ASCE 7-22 Rooftop solar panel.
• Updated free solve limits - 3 per week.

v4.2.3 - 26 Mar 2024

• Updated ASCE 7-10 wind load calculation detailed report.
• Bug fix on NBCC 2020 Spectrum Graph in the detailed report.
• Some UI bug fixes.

v4.2.2 - 14 Mar 2024

• Updated AS 1170.4 Seismic Load input parameters - added option to use approximate T1 or user-defined value.
• Updated ASCE 7-16/7-22 Rooftop Solar Panel - added calculation method option for rooftop solar panel with tilt angle less than 2° and roof angle than 7° to use Section 29.4.3 or 29.4.4.

v4.2.1 - 11 Mar 2024

• Bug fixes on NBCC 2015/2020 seismic load - for vertical distribution of seismic forces, Mv value; updated detailed report
• Bug fix on Map image in UI report
• Updated NBCC 2015/2020 snow load - Multilevel roof snow load report
• Updated AS 1170.4 Seismic Load input parameters - added calculation of approximate T1 value.

v4.2.0 - 05 Mar 2024

• NEW Added AS 1170.4 (r.2018) Seismic Load Calculation for Australia.
• NEW Added AS 1170.4 (r.2018) Seismic Load Calculation for Australia for Quick Design Tool.
• NEW Added ASCE 7-22 Seismic Load Calculation.
• NEW Added ASCE 7-22 Snow Load Calculation.
• NEW Added NBCC 2015 Seismic Load Calculation.
• NEW Added Saudi Arabia SBC 301-18 Wind Speed Database in Mobile version.
• NEW Added NBCC 2015 Site Seismic Data (Appendix C) in Map Data viewer.
• NEW Added NBCC 2015 and NBCC 2020 Climate Data points (Appendix C) for wind, snow, and seismic data in Map Data viewer.
• NEW Added NBCC 2020 SHM6 Seismic Data points Map Data viewer.
• NEW Added CFE (2020) Wind Speed Data (1/200 years) in Map Data viewer.
• Improvements on Map Data viewer.
• Bug fixes on ASCE 7-16 solar panel wind load - for tilt angle > 45°.
• Bug fix on ASCE 7 roof Cp value for roof angle between 45 and 60 deg
• Bug fixes on validation checks.

v4.1.5 - 28 Feb 2024

• Updated NBCC 2015/2020 unbalanced/drifted snow load calculations results for multilevel roof.
• Some bug fixes.

v4.1.4 - 20 Feb 2024

• Updated ASCE 7-10 snow load calculations.

v4.1.3a - 17 Feb 2024

• Added side notification on seismic site data to enable seismic load.
• Some bug fixes.

v4.1.3 - 14 Feb 2024

• Enabled Seismic Load Calculations using ASCE 7-16 for locations other than USA.

v4.1.2 - 13 Feb 2024

• BETA: Added AS/NZS 1170.2 wind load calculation for Tanks/Silos/Circular Bins in API.
• Added solar panel gap and height of rooftop solar panel for calculation of γ_a in ASCE 7-22 wind load calculation.
• Some bug fixes.

v4.1.1 - 08 Feb 2024

• BETA Added AS/NZS 1170.2 wind load calculation for Tanks/Silos/Circular Bins in API.
• Some bug fixes.

v4.1.0 - 02 Feb 2024

• Added components and cladding pressure results for ASCE 7-16 wind load calculation for Tanks/Silos/Circular Bins.
• Added components and cladding pressure results for ASCE 7-22 wind load calculation for Tanks/Silos/Circular Bins.

v4.0.6 - 31 Jan 2024

• Deprecated SkyCiv Load Generator version 1.

v4.0.5 - 29 Jan 2024

• Added h_p,bottom parameter to unbalanced snow load - Multilevel roof Case II and III for NBCC 2015/2020 snow load calculation.
• Some bug fixes.

v4.0.4 - 25 Jan 2024

• NEW Added ASCE 7-16 wind load calculation for Tanks/Silos/Circular Bins.
• NEW Added ASCE 7-22 wind load calculation for Tanks/Silos/Circular Bins.
• NEW Added ASCE 7-16/ASCE 7-22 wind load calculation for Tanks/Silos/Circular Bins in SkyCiv API.

v4.0.3 - 23 Jan 2024

• Added minimum snow load pm override min_roof_snow_load in ASCE 7-16 and ASCE 7-22 snow load calculation API.
• Added default structure level value in Truss tower ASCE 7-16 and ASCE 7-22 wind load calculation.

v4.0.2 - 19 Jan 2024

• Added service wind pressure results for ASCE 7-16 and ASCE 7-22 solar panel, freestanding wall/solid signs, open frames, and truss tower wind load calculation in the detailed load report.

v4.0.1 - 11 Jan 2024

• NEW Added ASCE 7-16 and ASCE 7-22 Gust-effect Factor calculator Quick Design links.
• Bug fix on unbalanced snow load - input.

v4.0.0 - 09 Jan 2024

• Added SVG graph of snow load accumulation for multilevel roof - NBCC 2015/2020 Snow Load.

v3.6.3 - 28 Dec 2023

• BETA Added ASCE 7-16 Seismic Load calculation for Nonstructural component (Rooftop equipment and rooftop solar panel).
• BETA Added ASCE 7-16 Seismic Load calculation for Nonbuilding structures (Ground-mounted solar panel).

v3.6.2 - 20 Dec 2023

• NEW Added ASCE 7-22 Truss Tower Wind Load Calculation.
• Migrated ASCE 7-16 Truss Tower Wind Load Calculation from Load Gen V1.
• Added Plate Input guide for Wind Load in S3D (Buildings).

v3.6.1 - 14 Dec 2023

• NEW Added getSiteData function in Load Generator API for simplified input and results.

v3.6 - 13 Dec 2023

• BETA Added ASCE 7-16/7-22 Wind Load Calculation for Open Signs/Single-plane Frames.
• Updated Area Classification options for NBCC 2015/2020 snow input parameter - now includes C_w value to be used in the calculation.
• Added Lower Roof Slope Condition option in unbalanced multilevel roof NBCC 2015/2020 snow load input for calculating C_s on lower roof.

v3.5.10 - 12 Dec 2023

• Updated adding spectral loads from response spectrum data using seismic load in S3D.
• Bug fixes.

v3.5.9 - 11 Dec 2023

• Added autofill of selected plate IDs in S3D model in the node entry table when clicked on the Plate IDs cell.
• Some bug fixes.

v3.5.8 - 29 Nov 2023

• Bug fixes on leeward/sidewall area load in S3D - AS/NZS 1170.2 (2021).
• Added warning alert when Kv is calculated without building dimensions - AS/NZS 1170.2 (2021).
• Added automatic updating of floor elevation if mean roof height/reference height/ground to top value is changed in Buildings - Structure Data.
• Some bug fixes.

v3.5.7 - 20 Nov 2023

• NEW Added building openings input for AS/NZS 1170.2 (2021) Wind Load Calculation.
• Removed wall condition and type input in AS/NZS 1170.2 (2021) Wind Load input. These are now replaced by the building opening data.
• NEW Added new settings parameter for modifying the distance range of elevation data (elevation chart) from the structure.
• NEW Added new settings parameter for modifying the wind directionality factor Kd for ASCE 7 and NSCP 2015.
• Some bug fixes.

v3.5.6 - 07 Nov 2023

• Updated IS 875-3 wind load calculation.

v3.5.5 - 31 Oct 2023

• Renamed 'Generate Loads' button to 'Calculate Loads'.
• Separated 'Loads Summary' and 'Apply Loads' data tab in S3D. Renamed 'Apply Loads' button.
• Added autosave of load input data when Load Generator is closed in S3D.
• Some bug fixes.

v3.5.4d - 17 Oct 2023

• Updated default values of Terrain/Exposure categories (most conservative value) in Select Worst Case Direction.
• Floor Level has no data by default.
• Bug fix on different topo radius and saving elevation data.
• Some bug fixes.

v3.5.4c - 09 Oct 2023

• Updated Wind Load notes for flat roof results in S3D.
• Fixed node/plate table - cut dropdown - in S3D.
• Improved functionality of Input Error notification.
• Added "Confirm Data" button to validate input per section. Added color changing of main menu button when this button is clicked.

v3.5.4b - 28 Sep 2023

• Added Average mass per unit height input parameter for AS/NZS 1170.2 (2021) wind load calculation for poles.

v3.5.4a - 27 Sep 2023

• Added NBCC 2020 snow load calculation.
• Autmatically checks wind load checkbox by default.

v3.5.4 - 26 Sep 2023

• Updated AS/NZS 1170.3 Snow Load calculation.
• Some bug fixes on snow load input and output figures.

v3.5.3c - 22 Sep 2023

• Bug fixes in the EN 1991 Snow Load input parameters - roof abutting snow case.

v3.5.3b - 20 Sep 2023

• Updated NBCC 2015 Snow Load calculation.
• Bug fixes in the UI and S3D integration.

v3.5.3a - 13 Sep 2023

• Updated ASCE 7-16 and EN 1991 Snow Load calculation.
• Bug fixes in the UI.

v3.5.3 - 13 Sep 2023

• Migrated map data available in Version 1 UI.

v3.5.2 - 11 Sep 2023

• NEW Release of Load Generator V2 for Free tool, standalone, and S3D.

v3.5.1 - 06 Sep 2023

• NEW Added Portugal snow load data.
• NEW Release of Load Generator V2 for Free tool, standalone, and S3D.

v3.5 - 16 Aug 2023

• BETA Added ASCE 7-22 Wind Load Calculation for building, freestanding wall/signboards, solar panels (rooftop and ground arrays), and rooftop equipment.

v3.4.4 - 09 Aug 2023

• Added ASCE 7-22 Wind Load Calculation API.
• Bug fix on save node data function in Load Generator in S3D.

v3.4.3 - 03 Aug 2023

• Added Portugal Wind Speed Map Data - NP EN 1991-1-4.
• Updated options for enclosure classification for NBCC 2015 and 2020; Diabled open roof profiles.

v3.4.2 - 09 Jul 2023

• Added natural frequency and damping ratio for calculation of detailed gust effect factor (ASCE 7 wind load calculation).

v3.4.1a - 05 Jul 2023

• Added Gust effect factor input for ASCE 7 freestanding wall wind load calculation.

v3.4.1 - 04 Jul 2023

• BETA Added ASCE 7-16 wind load calculation for rooftop equipment.
• Added walkthrough on how to use the Load Generator v2 UI.

v3.4 - 26 Jun 2023

• BETA: Added NBCC 2020 for seismic load calculation.

v3.3.11 - 14 Jun 2023

• BETA: Added NBCC 2020 Seismic Hazard Values for seismic load calculation.

v3.3.10 - 06 Jun 2023

• BETA: Added CFE Viento 2020 wind load calculation.

v3.3.9 - 27 May 2023

• Added Singapore SS EN 1991-1-4 wind load calculation in API and mobile version.

v3.3.8 - 24 May 2023

• Added AS/NZS 1170.2 (2021) wind load calculation in API.

v3.3.7 - 12 Apr 2023

• Added parapet height for calculating design wind pressures for parapet walls using ASCE 7-16 MWFRS and C&C.
• Updated ground snow load values for Alaska - ASCE 7-16 - using Structural Engineers Association of Alaska (SEAAK) Alaska Snow Loads.

v3.3.6 - 22 Mar 2023

• Added ASCE 7-22 wind and seismic site data for API calculations.

v3.3.5 - 17 Mar 2023

• Updated IS 875-3 2015 (2020 update) wind speed map to using the National Buildign Code of India 2016.
• Added user-defined shielding parameter for AS/NZS 1170 (2021)

v3.3.4 - 28 Feb 2023

• Bug fix on the conversion of site wind speeds to design wind speed for AS/NZS 1170.2 (2021).
• Added Vdestheta user override for all directions AS/NZS 1170.2 (2021).
• Added K_c,e and K_c,i showed in Action Combination Case options for AS/NZS 1170.2 (2021).

v3.3.3 - 19 Jan 2023

• Updated free wind load run limit to 2 and included structure types to the free tool.
• Added service wind speeds for ASCE 7 - displayed on the map.

v3.3.2 - 20 Dec 2022

• Updated NBCC 2015 wind load calculation report v2.0 for buildings.

v3.3.1 - 06 Dec 2022

• Updated EN 1991-1-4 wind load calculation report v2.0 for buildings.

v3.3 - 21 Nov 2022

• NEW: Added NSCP 2015 seismic load calculation.
• NEW: Added version 2 of API results for ASCE 7-16 and NSCP 2015.

v3.2.9 - 14 Nov 2022

• BETA: Added NSCP 2015 site seismic load data.

v3.2.8 - 17 Oct 2022

• BETA: Added NZS 1170.5 seismic load calculations.

v3.2.7 - 11 Oct 2022

• BETA: Added NZS 1170.5 seismic load calculation in API.

v3.2.6 - 28 Sep 2022

• BETA: AS/NZS 1170.2 (2021) wind load calculation for freestanding poles.

v3.2.5 - 27 Sep 2022

• Updated AS/NZS 1170.2 (2021) wind load calculation report v2.0 for building, free roofs, and solar panels.

v3.2.4 - 18 Aug 2022

• Updated the "Select Worst Case Wind Source Direction" function - the topo factors can now be edited using the elevation chart

v3.2.3 - 09 Aug 2022

• NEW: Integrated spectral load data from ASCE 7-16 seismic load calculation.

v3.2.2 - 04 Aug 2022

• NEW: Added design response spectrum for ASCE 7-16 seismic load calculation.
• NEW: Added node id entries for diaphragm loads in S3D for ASCE 7-16 Seismic Load Calculation.

18 Jul 2022

• Removed cases IV and V for unbalanced duopitch snow load - AS/NZS 1170.3.

v3.2.1 - 12 Jul 2022

• Updated AS/NZS 1170.3 snow load calculation, report output, and API parameters.

v3.2.0 - 06 Jul 2022

• NEW: Added ASCE 7-16 Seismic Load Calculation - using Equivalent Lateral Force procedure.

v3.1.7 - 30 Jun 2022

• Added Gust effect factor input for ASCE 7 solar panel wind load calculation.

v3.1.6 - 15 Jun 2022

• NEW: Added Comisón Federal de Electricidad (CFE Viento) wind load calculations for Mexico.
• Updated wind pressure results for solar panels - AS/NZS 1170.2 (2021) and ASCE 7-16. Now shows the conditions to be satisfied on using the wind load calcs.
• Updated translation of Spanish wind parameters.
• Updated wind pressure results for monoslope roof - AS/NZS 1170.2 (2021). Now shows the downwind pressure (180 degrees).

v3.1.5 - 25 Apr 2022

• Added plate ids on node entry table for option to apply the wind/snow pressures as pressure loads on plates.

v3.1.4 - 23 Mar 2022

• NEW: Added AS/NZS 1170.2 ground solar panel wind load calculation for tilt angle greater than 30 degrees - as freestanding wall

v3.1.3 - 08 Mar 2022

• BETA: Added calculation of initial parameters for all 8 directions in selecting worst direction for ASCE 7, NSCP 2015, and AS/NZS 1170.2

v3.1.2 - 08 Feb 2022

• Updated AS/NZS 1170.3 Ground Snow load calculation - now based on site elevation

v3.1.1 - 25 Jan 2022

• NEW: French Territories wind speeds for NF EN 1991-1-4.

v3.1.0 - 24 Jan 2022

• NEW: Dedicated ASCE 7-16 rooftop and ground solar panel wind/snow load calculations.
• NEW: AS/NZS 1170.2 (2021) Rooftop and Ground solar panel wind/snow load calculations.
• NEW: EN 1991-1-4 signboard wind load calculations.
• NEW: EN 1991-1-4 pole wind load calculations.
• Some bug fixes on column wind load, autodetection of walls/roofs and generating API files from UI.

v3.0.0 - 09 Nov 2021

• NEW: Interactive selection of points in topography chart
• Updated AS/NZS 1170.2 wind load calculations to 2021 edition.

v2.9.3 - 14 Sep 2021

• NEW: Lee Multiplier parameter for AS/NZS 1170 (for New Zealand areas)
• NEW: Importing of API file functionality.

v2.9.2 - 10 Sep 2021

• NEW: Version 2.0 of Mobile Load Generator: Added Spain (CTE DB SE-AE), Philippines (NSCP 2015), Mexico (CFE), Uruguay (UNIT 50), Colombia (NSR 10), Argentina (CIRSOC 102) and Brazil (ABNT NBR 6123) wind speeds to Mobile Load Generator.

v2.9.1 - 08 Sep 2021

• NEW: API function for signboards + pole for EN 1991-1-4.

v2.9 - 12 Aug 2021

• BETA: Beta release of CTE-DB-SE Wind Load Calculations for Spain.
• Updated flat roof figures for monoslope and hip roof profile - ASCE 7-16.
• Updated map clicking info display - IS 875 and CTE DB SE.

v2.8.3 - 31 Jul 2021

• NEW: Fixed interpolation of cpe values for monopitch, duopitch, flat, and hip roof - EN 1991.

v2.8.2 - 06 Jul 2021

• Updated terrain categories for AS/NZS 1170.2.
• Fixed interchanged cpe values of EN 1991 open roof for blocked and empty under

v2.8.1 - 15 Jun 2021

• Added roof overhang pressure results for ASCE 7 and NSCP 2015.

v2.8.0 - 07 Jun 2021

• NEW: Added NSCP 2015 Wind Load Calculations for Philippines.
• NEW: Added API file button to generate API input json from the parameters.
• Updated default value for elevation table on Structure Tab.
• Updated wind and snow data on maps - added labels.
• Refactored some codes for optimized performance.

v2.7.0 - 01 Jun 2021

• NEW: Added IS 875-3 Wind Load Calculations for India.
• Updated some figures on ASCE 7 wind results.

v2.6.6 - 04 May 2021

• Some bug fixes on API parameters.
• Some bug fixes on UI parameters.

v2.6.5 - 29 Mar 2021

• Some bug fixes on API parameters.
• Updated wall and roof cladding area input - can now allow to have multiple areas separated by comma.

v2.6.4 - 12 Mar 2021

• NEW: Added wind speed map data for India - IS 875 - on mobile app.
• NEW: Added wind speed map data for Spain CTE DB SE-AE on map server (mobile and web app).

v2.6.3 - 23 Feb 2021

• NEW: Added calculation of dynamic factor Cd for EN 1991-1-4 wind load calculation.

v2.6.2 - 18 Jan 2021

• NEW: Added parapets wind load calculation for ASCE 7.
• NEW: Added rooftop solar panel wind load calculation for ASCE 7-16.

v2.6.1 - 17 Nov 2020

• NEW: Added wind load detailed calculation for ASCE 7 Freestanding Wall.

v2.6.0 - 16 Nov 2020

• NEW: Added snow load detailed calculation for EN 1991-1-3.

v2.5.9 - 10 Nov 2020

• NEW: Added snow load detailed calculation for AS/NZS 1170.3

v2.5.8 - 30 Oct 2020

• NEW: Added snow load detailed calculation for NBCC 2015
• Some bug fixes on snow load calculations API.

v2.5.7 - 21 Oct 2020

• NEW: Released mobile app for wind and snow load, and topo factors by address input.

v2.5.6 - 12 Oct 2020

• Modified distance from shoreline and distance inside town for BS EN 1991-1-4.
• Fixed API bug on snow load calculations.

v2.5.5 - 09 Oct 2020

• Modified Wind Direction dropdown to Wind Source Direction to be consistent with the upwind direction for AS/NZS 1170.2 and EN 1991-1-4.
• Fixed some bugs on input for AS/NZS 1170.2 calcs.

v2.5.4 - 07 Oct 2020

• NEW: Added automatic calculation of approximate distance from shoreline based on wind direction for BS EN 1991-1-4

v2.5.3 - 05 Oct 2020

• NEW: Added snow load detailed calculation for ASCE 7
• Updated wind load parameters for BS EN 1991-1-4
• Updated wind load detailed calculation for BS EN 1991-1-4

v2.5.2 - 25 Sep 2020

• NEW: Integrated wind load detailed calculation for EN 1991-1-4

v2.5.1 - 10 Sep 2020

• NEW: Integrated wind load detailed calculation for NBCC 2015

v2.5.0 - 07 Sep 2020

• NEW: Added Freestanding Wall wind calculations for ASCE 7
• NEW: Added Truss Tower wind calculations for ASCE 7
• NEW: Added 3D renderer to visualize structure model
• Some bug fixes on wind reporting and server calculations

v2.4.0 - 30 Jul 2020

• Some bug fixes on wind reporting.

v2.3.0 - 10 Jul 2020

• NEW: Integrated wind load detailed calculation for AS/NZS 1170.2
• Fixed wind load results for AS/NZS 1170.2

v2.2.0 - 26 Jun 2020

• NEW: Added metric results for ASCE 7-16
• NEW: Integrated wind load detailed calculation for ASCE 7-16
• Added monopitch and duopitch for sub-alpine AS/NZS 1170 snow result

v2.1.0 - 29 May 2020

• Fixed save/load function to include snow loads input
• Added visible map data for wind and snow
• Added restrictions for free and standalone tool

v2.0.0 - 20 May 2020

• NEW: Released Snow Load calculations
• Some bug fixes

v1.8.0 - 18 May 2020

• Redesigned building tab for better UI
• Updated wind speed calculation for faster loading. Wind speeds are now from server. Removed geojson files which are slowing the ui loading.
• Added snow load values on site tab.
• Some bug fixes on wind load calcs especially wind speed values for asce 7-10 and asce7-16.
• Bug fix info-window content displayed on map.
• Updated cladding results figure for asce7.
• Added snow load calculations for all reference codes but is disabled for now - QC testing ongoing.

v1.7.1 - 19 December 2019

• Enclosed building parameters for AS/NZS 1170.2 were hidden when structure type selected is for open building/free roof.
• Fixed validation function for AS/NZS 1170.2 open building/free roof building data for pitched, troughed, and monoslope roof.
• Renamed AS/NZS 1170.2 Open Building to AS/NZS 1170.2 Free Roof.
• Fixed bug on loading sls-uls parameters from load file for AS/NZS 1170.
• Fixed bug on validation of site-tab input parameters for EN 1991.

v1.7.0 - 12 November 2019

• Improved New Zealand geojson - compressed - for faster loading time.
• Added upgrade prompt for free standalone when save/load button is clicked.
• Fixed unit conversion in results and refactored some code.
• Updated results and figures for EN 1991.
• Some bug fixes for EN 1991 and ASCE 7 results.

v1.6.0 - 12 November 2019

• NEW: Added save/load functions for file management.

v1.5.0 - 07 November 2019

• Some bug fixes on UI and calculations - cladding pressures for ASCE 7 and NBCC 2015.
• Updated wind figures with better appearance.

v1.4.0 - 05 October 2019

• NEW: Added season and direction factor for France EN 1991-1-4.
• NEW: Added wind speed map for Finland SFS EN 1991-1-4.
• NEW: Added wind speed map for Czechia (Czech Republic) CSN EN 1991-1-4.
• NEW: Added auto-detection of nodes for windward, leeward, roof, sidewall surfaces in S3D.
• Some bug fixes on UI and calculations.
• Fixed Column Wind Load for S3D integration.

v1.3.0 - 06 August 2019

• NEW: Added ASCE 7-16 wind load calculations.
• NEW: Added Elevation chart for calculating topography factor for ASCE 7-10, ASCE 7-16, AS/NZS 1170.2, NBCC 2015 and orography factor for EN 1991-1-4.
• NEW: Added reporting functionality to generate PDF wind reports.
• Separated wind pressure calculation for main wind force resisting system and components and cladding for ASCE 7-10, ASCE 7-16, AS/NZS 1170.2, and NBCC 2015.
• Updated the AS/NZS 1170.2 wind map - adding distance of site location from coastline if location is on Australia main island to aid the user what wind region to adopt. Map regions can now be clicked to display the corresponding wind region. Geojson files downloaded on the front end were compressed for faster return of wind region/wind speed results.
• Improved the results tab - building image and table - for better visualization of design pressures.
• NEW: Added standard cladding pressure results for area values of 1, 10, and 100 sq.ft. (ASCE 7-10 and ASCE 7-16).
• Fixed input validation and added alert message to display error.
• Some bug fixes on UI and calculations.

v1.2.0 - 02 April 2019

• NEW: Added Canadian Wind Speed Map.
• NEW: Added NBCC 2015 Wind Pressure calculations
• NEW: Added new Ultimate Limit State (ULS) and Serviceability Limit State (SLS) wind speeds for AS1170.
• Separated result wind speeds in blue box for easier interpretation of results

v1.1.0 - 22 March 2019

• NEW: Added UK and Ireland Wind Speed Maps
• NEW: Added NZ Wind Speed Map
• NEW: Added Belgium, Poland, Slovakia, Slovenia, Luxembourg wind speed maps
• NEW: New functionality to move pin and recalculate wind speeds.

v1.0.0 - 15 January 2019

• First release of SkyCiv Wind Load software as calculator and standalone software
• Released wind speed map for United States, Australia, Italy, France, Germany, Netherlands, Greece
• Calculates design pressures based on ASCE 7-10, EN 1991 AS 1170 design standards

v4.0.0 - 23 September 2026

General UI Changes:
Added support for Strip Footing (ACI 318-19)
Added Upload File button on the Design Code Launcher
Added File Manager Button on the Design Code Launcher
Open and save file using the project manager
Improved the Design Code Launcher
Moved the foundation type selector to the Design Code Launcher
Removed the Miscellaneous tab
Removed Foundations tab
Limited each file to a single foundation model
Files containing multiple foundations can now be opened as individual model files in separate tabs
Added top-menu shortcuts for Design Settings and Documentation
Renamed "Solver Settings" button to "Edit Design Settings"
Moved "Edit Design Settings" button to the Details tab
Removed self-weight data from the summary for isolated and combined footings
Added reinforcement data to the summary for isolated and combined footings
Geometry Tab Changes:
Added foundation designation (previously known as the Model ID)
Moved mesh settings from the Miscallenous tab to the Geometry tab
Switched Column shape selector from radio checkbox into a dropdown
Materials Tab Changes:
Moved Soil Unit Weight from the Materials tab to the Soil tab
Soil Tab Changes:
Changed the Groundwater input from a checkbox to a toggle
Reinforcement Tab Changes:
Added separate tab for Dowel Bars
Moved the Concrete Cover input to the corresponding reinforcement tabs
Loads Tab Changes:
Added Load Cases tab
Added Design Factors tab
Added a dropdown to select the load combination displayed in the renderer
Added circular buttons to add or remove loads
Moved all design factors inputs from Miscellaneous tab to the Design Factors tab
Results Tab Changes:
Save PDF report using the project manager
Design checks now run automatically when the Results tab is first opened
Replaced utility ratio table with a summary list
Updated the FEA results renderer to display the footing using a reduced plate thickness
Moved FEA results options to the upper right corner
Added a separate button to view the Detailed Report
Improved the layout of the Shear & Moment Diagrams modal

26 August 2026

	Added an option to exclude the minimum reinforcement extension requirement under Solver Settings (American Standard).
	Updated confinining reinforcement factor (ψr) for hooked bar development: 1.6 for ACI 318-19, 1.0 for ACI 318-14

12 August 2026

	Set a 1% utilization threshold for top bar development length checks for isolated footing. (American standard)
	Updated top bar development length checks for isolated footings to use the maximum moment in each direction (American & Australian standards).

07 August 2026

	Fixed issue on punching shear check for CSA combined footing.
	Fixed issue on flexure check for EN combined footing.

08 July 2026

UI Changes for Australian & European Standards:
	Added the ability to view footing shear and moment diagrams
	Added a solver setting to include soil and footing self-weight in both SLS and ULS checks
	Added a solver setting to switch between the Peak Wood–Armer Method and the Strip Average Method for moment demand
	Added a solver setting to include soil and footing self-weight for stability load combinations (Australian Standard)
	Added a solver setting for punching shear beta calculation method options which is either simplified or fully plastic shear distribution (European Standard)
	Renamed button for Shear & Moment Diagrams modal pop-up from 'VMD' to 'Diagrams'
	Removed maximum shear utility ratio on the the results table (European Standard)
Calculation changes for both Australian & European Standards:
	Integrated FEA mesh results to calculate punching shear force
	Updated moment demand using the moment diagram for the strip average method
	Updated one-way shear demand using the shear diagram
	Enhanced reporting by including shear and moment diagrams in the report
	Reactivated one-way shear checks
	Additional moment demand and capacity on the z-direction (Column 1 & 2) for the strip average method
	Revised moment capacity & demand notations for strip average method
Calculation changes for European Standard:
	Added complete beta formulas (critical perimeter, W, beta) for each column cases used in the calculation of the maximum shear stress
	Implemented the minimum shear capacity of concrete in the punching shear check
	Updated the punching shear check to express demand and resistance in terms of shear stress (νEd, νRd) instead of shear force (VEd, VRd)
	Enhanced the punching shear check to evaluate critical perimeters at multiple distances from the column face (0.25d, 0.50d, 0.75d, 1.00d, and 1.45d).
	Updated images of each column cases for punching shear
	Added 2d/a in the punching shear capacity formula
	Added a summary of punching shear utilization ratios at each critical perimeter.
	Removed maximum shear check at the column face
	Fixed the punching shear check to use the average effective depth (dave) instead of the directional effective depth (db,x or db,z).
Calculation changes for Australian Standard:
	Fixed the calculation of the concrete shear strength factor (kv) for one-way shear calculation
	Fixed the punching shear calculation to use dom instead of the effective shear depth (dv)

23 April 2026

Calculation changes for American & Canadian Standards:
	Implemented enhanced punching shear checks for isolated and combined footings to improve the accuracy of results.
	The transferred unbalanced moment now includes contributions from load eccentricity.
	Total punching shear force now accounts for the resultant soil pressure acting over the critical shear perimeter.
	Shear stress is formulated using equivalent polar moments of inertia (Jcx, Jcz) for interior and edge cases.
	Corner case shear stress is computed using the general formulation based on section moments of inertia (Ixx, Izz, Ixz).
	Shear stress output is standardized to MPa or psi.
	Added summary tables for equivalent polar moments of inertia, section moments of inertia, and point-wise shear stress evaluation.
	For corner cases, principal axes rotation is now considered. Unbalanced moments are transformed to principal axes and mapped back to geometric axes for shear stress evaluation.

05 February 2026

General UI Improvements:
	ACI 318 (2019) is now available for isolated and combined footings
	Added a solver setting to include soil and footing self-weight in both SLS and ULS checks
	Added a solver setting to switch between the Mesh-based Method and the Corner-based Method for punching shear demand calculations for isolated footings (American standard)
	Added a solver setting to switch between the Peak Wood–Armer Method and the Strip Average Method for moment demand calculations (American and Canadian standards)
	Added solver setting to implement the rule of two-thirds for bending moments under the Canadian standard.
	Added the ability to view footing shear and moment diagrams (American & Canadian Standards)
	Replaced checkboxes with toggle switches in solver settings
	Fixed an issue where the number of reinforcement bars in the report did not match the 3D graphics
	Corrected the column height dimension for combined footings
Calculation changes for both American & Canadian Standards:
	Enhanced reporting by including shear and moment diagrams in the report
	Updated one-way shear demand using the shear diagram
	Updated moment demand using the moment diagram for the strip average method
	Updated flexure utility ratio for the strip average method
	Additional moment demand and capacity on the z-direction (Column 1 & 2) for the strip average method
1. American Standard Changes:
	Effective depth in each direction is now used for moment resistance instead of the mean effective depth
	Added minimum reinforcement check for load transfer
	Revised material density notation from using γ to w
	Revised punching shear demand notations from Vtw,demand to Vu and shear capacity from Vtw,capacity to Vc for corner-based method
	Punching shear is checked in terms of stress for mesh-based method
	Revised notations for one-way shear demand from Vdemand to Vu and capacity from Vcapacity to Vc
2. Canadian Standard Changes:
	Revised moment resistance notation from mr to Mr
	Considered the rule of two-thirds for moment demand
	Added a thickness-based factor for punching shear calculations in thick slabs
	Updated moment resistance calculation for top bars for combined footing
	Column Classification for punching shear calculation
	Fixed typographical error for Asbot (combined footing)
	Updated effective depth equation for top bars

11 June 2025

UI Changes for Australian Standards:

• Set default value of Poisson's ratio of concrete from 0.17 to 0.20.
• Set default value of unit weight of concrete from 24.5 kN/m³ to 23.5 kN/m³.
• Set default value of concrete from 20 MPa to 32 MPa.
• Default values of modulus of elasticity for concrete are now based on the values from AS 3600 clause 3.1.3.
• Added warning notifications for missing service or ultimate loads when adding wind or earthquake loads.

04 June 2025

• Updated overturning checks (ACI, 318 EN, CSA).
• Added resisting and overturning moment formula.
• Revised tabulation of eccentricities to tabulation of moments.
• Revised notes considering resisting and overturning moments.
• Improved detail and accuracy in one-way shear demand calculations for CSA 2014.
• Added SLS5a and SLS5b in SLS load combinations list and tables for CSA 2014.
• Included SLS5a and SLS5b options in the load combination dropdown menus for CSA 2014.

08 May 2025

• Changed the 0.066 factor to 0.66 used for the shear strength of reinforcing steel for ACI318-14 piles.

05 May 2025

• Added button that can cancel the design check.

22 April 2025

• Implemented collinear columns along the x-axis for combined footings.

14 April 2025

General UI Bug Fixes and Improvements:

• Fixed the issue where the UI switches to mobile mode when resizing the window
• Fixed incorrect direction of Vz in the graphics (combined footing)
• Displays the correct value and direction of loads in 3D graphics
• Added option to skip one-way shear checks
• Added option to skip load transfer checks
• Added soil cohesion user input
• Rename 'Gross Allowable Soil Bearing Capacity' to Allowable Soil Bearing Capacity
• Renamed the 'Add static load' button to 'Add Load'
• Renamed header for Longitudinal reinforcements to 'Reinforcements along the x-direction'
• Renamed header for Transverse reinforcements to 'Reinforcements along the z-direction'
• Adjusted default values for steel strength, combination factors, long-term and short-term factors, and bearing capacities to more realistic levels
• Renamed the design code selection for Australian Standard (2018) to 'Australian Standard (AS 3600:2018, AS 2159-2009)
• Renamed the design code selection for Australian Standard (2009) to 'Australian Standard (AS 3600:2009, AS 2159-2009)

UI Changes for Australian Standards:

• Fixed info tip for F_gw Combination Factor
• Removed the 65 MPa concrete strength (f'c) limit
• Added option to add ULS check soil bearing capacity
• Added Ultimate Soil Bearing Capacity user input
• Added 'Stability' load combination for custom loads
• Renamed header 'Imposed Action Factors' to 'Load Combination Factors'
• Set the default value of the punching shear edge factor to 0.5

General Calculation Changes:

• Fixed maximum eccentricity to consider negative values (considered the absolute value of eccentricities to get the maximum)
• Added passive soil resistance considering the presence of groundwater (Sliding Checks)
• Added passive force due to cohesion (Sliding Checks)
• Added base resistance due to cohesion (Sliding Checks)
• Revised sliding check message when no shear force is declared
• Revised table header for self-weights to 'Additional loads on the footing'

Calculation Changes For Australian Standard One-way Shear Check:

• Added One-way shear check for isolated footings
• Added depth check for shear reinforcements
• Updated Vu,max formula according to AS 3600:2018 amendment 2

Calculation Changes For Australian Standard Development Length Check:

• Fixed cd calculation using clear spacing of bars in development length check
• Updated the value of factor k₁ to reflect thick bottom concrete cover exceeding 300 mm
• Concrete strength (f'c) taken as 65 MPa for strength classes exceeding 65 MPa

Calculation Changes For Australian Standard Punching Shear Check:

• Set the default critical shear perimeter from (punching_shear edge_factor * d) to 0.5d for punching shear check
• Corrected the formula used for calculating the critical shear perimeter
• Improved reporting of punching shear checks
• Added illustration guides for the column position classification

Calculation Changes For Australian Standard Bending Check:

• Revised moment capacity for plain concrete formula, changed 0.45√f'c to 0.6√f'c
• Revised moment capacity formula, changed α₂ to ku
• Updated ductility check conditions (ku <= 0.36) in the calculation of moment capacity
• Recalculated 'a' and 'ku', then added formula for moment capacity of the non-ductile section
• Removed minimum reinforcement check for top bars

Calculation Changes For Australian Standard Stability Check:

• Buoyancy force accounted for in stability checks when using custom loads
• Revised destabilising and stabilising moment formulas to consider moments at toe and heel
• Updated P, V, M values in tables for destabilising and stabilising moments
• Additional notes for overturning check
• Updated overturning ratio to consider x and z directions
• Renamed Stabilising moments and destabilising moments table headers to 'About x' and ' About z' in overturning checks
• Improved calculation process for stability checks for custom load cases

Calculation Changes For American Standard:

• Added One-way shear check for isolated footings

24 February 2025

• Calculation of piles geotechnical capacity using ultimate limit state.
• Fixed issue of progress status bar stuck at 8.5% for multiple foundations with custom loads on.
• CSA 2014: Fixed incorrect moment capacity due to a negative value in footing reinforcement area per unit length.
• CSA 2014: Added notification when zero anchorage length is provided in one direction.
• ACI 318-14 Piles: Added user-defined factors of safety for bearing and uplift serviceability checks.
• ACI 318-14 Piles: Added user-defined strength reduction factors for compression and tension members.

09 January 2025

• General UI Changes:
1. NEW: Visualize column dowel/starter bars in 3D.
2. NEW: Visualize footing bar hooks in 3D.
3. NEW: Added column dowel/starter bars direction.
4. NEW: Added solver settings button.
5. NEW: Option to ignore development length checks for column dowel/starter bars.
6. NEW: Option to ignore development length checks for top and bottom footing bars.
7. NEW: Added footing bar end configurations (straight, 90-degree hook, 180-degree hook).
8. NEW: Separate renderer filter options for top and bottom bars.
9. NEW: Added filter option for column dowel/starter bars.
10. NEW: Concrete cover input for column.
11. NEW: Load combinations info tip in the FEA results.
12. Moved punching shear factor input into the solver settings modal.
13. Added development length checks on each face of column per direction.
14. Moved the concrete cover input from the Miscellaneous to Reinforcement tab.
• UI Changes for ACI:
1. NEW: Added Confining reinforcement modification factor of dowel bars.
2. Removed Casting position factor Ψt.
3. Added info tip for the coating factors.
• UI Changes for AS:
1. NEW: Added toggle for epoxy-coated reinforcements.
2. NEW: Added Stability load combinations in the renderer option.
3. NEW: Groundwater combination factor.
• UI Changes for CSA:
1. Removed development length factors (k1, k3, k4).
2. Added info tip for the coating factors.
• UI Changes for EN:
1. NEW: Added long-term coefficient factor for concrete.
2. NEW: Added toggle for welded transverse reinforcements.
3. Switched concrete strength input from text input into dropdown selection.
4. Switched steel strength input from text input into dropdown selection.
• Calculation Report Changes for Column Dowel/Starter Bars:
1. Detailed compression development length check.
2. Additional check if the column is under tension for each load combination.
3. Detailed tension development length check if the column is under tension.
• Calculation Report Changes for Flexural Bars:
1. Detailed compression development length check for both top and bottom bars.
2. Detailed checks of the provided anchorage length from each face and each side of the column(s).
3. Detailing check: footing thickness based on bar-end configurations.
4. Added illustrations as a guide for the anchorage length provided.
5. Revised Critical bending distance figure (AS 3600).
• Calculation Report Changes for Stability Checks (AS 3600):
1. Applied the groundwater combination factor.
2. Set buoyant force as Su.
3. Revised stability checks using the stability load combinations (uplift, sliding, and overturning checks).
4. Added SLS6 and SLS7 under the serviceability load combinations.

15 May 2024

• NEW: Added column dowel bars toggle.
• NEW: Added short-term load combination factor (Ψs) for AS 3600.
• NEW: Added wind & seismic service load types (Ws & Es) for AS 3600.
• NEW: Option to ignore compression development length check for column dowel bars.
• NEW: Access to report manager after running design checks.
• Revised serviceablity load combinations for AS 3600.
• Revised piles uplift check for ACI 318-14.
• Revised footing flexural (tension) development length check for ACI 318-14 & AS 3600.
• Removed the bar size factor (Ψs) input from the UI for ACI 318-14.

03 May 2024

• NEW: Import JSON files under the File menu.
• Improved notifications and validation of invalid input.
• Fixed the issue where the 3D renderer crashes when inputting invalid reinforcement data.
• Fixed Report Manager under the File menu.

15 April 2024

• NEW: Added button to duplicate model inside the foundations table.
• NEW: Added custom model name input inside the foundations table.

13 March 2024

• NEW: Integration of Finite Element Analysis (FEA).
• NEW: Improved soil pressure analysis based on FEA results.
• NEW: Added wood-armer analysis.
• NEW: Added mesh size input, meshed plate model & plate ids preview.
• NEW: Added Modulus of subgrade reaction (isolated & combined footings).
• NEW: Added punching shear edge factor input to determine column classification (interior, edge, or corner).
• NEW: Added loading screen when solving the model.
• NEW: Enabled column offset in the z-direction for combined footings.
• NEW: Enabled input for shear loads & moments in both x & z directions for combined footings.
• NEW: View 3D FEA results in both x & z directions for soil pressure and wood-armer analyses.
• NEW: Toggle FEA results across all load combinations including envelope cases.
• NEW: Toggle FEA results for the top, bottom, or both faces for wood-armer analysis.
• Added FEA results screenshots into the design reports.
• Updated buoyant force calculation due to the effect of groundwater.
• Revised uplift check.
• Added sliding check for combined footing.
• Added overturning check for combined footing.
• Updated service load combinations for CSA.
• Updated one-way shear check of isolated footing for CSA.
• Used exact effective depth in punching shear checks (ACI and CSA).
• Added punching shear area from "d" distance for Eurocode.
• Updated punching shear demand according to FEA results.
• Added plain concrete capacity in flexure checks of isolated footing.
• Considered the reduced area in flexure/moment resistance for CSA.
• Used unit length in calculating the reinforcement capacity.
• Updated bearing checks for CSA and ACI codes.

20 November 2023

• NEW: Added user-defined end-bearing capacity and total skin-friction resistance for Piles foundation.

12 May 2023

• NEW: Added screenshot button to download the graphics in PNG format.
• NEW: Added orthographic & front view shots into the detailed report for isolated & combined footings.
• NEW: Added orthographic & top view shots into the detailed report for piles foundation.
• Removed view buttons in right-side menu as they can now be done using the view cube in the bottom-left.

17 April 2023

• NEW: Improved & cleaner user interface.
• NEW: Added CSA A23.3-14 code for isolated and combined footings.
• NEW: Added interactive 3D graphics renderer for all foundation types.
• NEW: Added 3D graphic representation of soil pressures for isolated and combined footings.
• NEW: Added model summary data.
• NEW: Added graphic views control.
• NEW: Added visibility settings for the 3D graphics.
• NEW: Added option to display different load combinations.
• NEW: Added toggle to add top longitudinal & lateral reinforcement inputs for isolated footing.
• NEW: Added maximum critical values for ULS and SLS load combinations in the report.
• NEW: Replaced alerts with side notifications for warnings and model validation.
• Merged AS 3600 imposed action factors of columns 1 & 2 for combined footings.
• Removed the number of shear reinforcement input for Piles foundation.
• Renamed 'Soil Configuration' tab to 'Soil'.
• Renamed 'Design Parameters' tab to 'Miscellaneous'.

28 October 2022

• NEW: Column Offset (x,z) for isolated foundation.

14 September 2022

• NEW: Added project details in the reporting.
• Renamed zone labels (soil pressure).
• Updated soil pressure calculations for Zones D & E (formerly Zones 3 & 4).

24 August 2022

• NEW: Improved user interface that is cleaner and easier to use.
• NEW: Added Eurocode design code for isolated, combined and pile foundations.
• NEW: Added surcharge area load input (isolated & combined).
• NEW: Added round columns (combined).
• NEW: Improved reporting format & more detailed calculation.
• NEW: Added detailed calculation of service & ultimate soil pressures (isolated & combined).
• NEW: Added shear force & bending moment table into the report (combined).
• Revised uplift check (isolated & combined).
• Revised sliding check (isolated).
• Revised overturning check (isolated).
• Changed soil bearing capacity to gross allowable soil bearing capacity (isolated & combined).
• Transferred the edge inputs from 'Footing Confgurations' to 'Column Configurations' tab (combined).

v1.2.0 - 17 August 2020

• NEW: Added AS3600-2018 for Isolated and Combined Foundations.
• NEW: Added AS3600-2009 for Pile Foundations.
• Lots of bug fixes.

v1.1.0 - 16 January 2020

• NEW: Added design module for combined foundation
• NEW: Added custom load feature
• NEW: Added filter graphics functionality
• NEW: Added shear and moment diagram for combined foundation
• Improved geometrical and analytical diagrams.
• Improved reinforcement tab for isolated foundation.
• More detailed calculation and improved reporting.

v1.0.0 - 22 August 2019

• First release of SkyCiv Foundation Design
• Released design modules for isolated and piles foundation
• Checks foundation design based on ACI 318-2014, AS 3600-2018, AS 2159-2009 design standards