Can I mix profiles from different standards (IS + AISC) in the same project?
Standards & Codes
Yes, and CalcSteel supports this natively — you can have ISMB beams, W-shape columns and SHS bracing in the same 3D model. The catalog contains 1,140+ profiles from AISC, Eurocode, NBR, IS, AS and more. For verification, however, you should pick one governing design code per check. Mixing IS 800 profiles verified with AISC 360 formulas is technically possible but creates traceability problems in your calculation report. The best practice: use the profile catalog freely, but set your analysis standard based on where the project will be built and what the local authority requires.
Key takeaways
- A profile from any catalogue is just geometry plus material - it can live in any model. The code you verify against is a separate choice.
- IS 800:2007 uses a single limit-state method with a 1.5 load factor on dead and live load; AISC 360 offers LRFD (1.2D + 1.6L) and ASD side by side.
- The danger of mixing is never the section table - it is applying one code's safety factors and stability rules to a member, then checking it against the other code's limits.
- CalcSteel keeps geometry universal but runs the verification per the code you select, so an ISMB and a W-shape can coexist in one model.
Full guide
Mix IS 800 and AISC 360 Profiles in One Project
Step-by-step with figures and sources — 9 min read
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