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 kt (correction factor for distribution of forces) and factor to calculate An.
- 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.