You change the load combinations your project is using by going to the Project Defaults tab for a given project and choosing a different design code, or specifying custom combinations. US combinations include IBC, IRC, and ASCE, as well as custom, while AU and NZ combinations have a choice of AS1170.0 or custom.

N.B. Load combinations you change for a project will apply to all calculations within that project. If you would like to reuse custom load combinations, you can copy the project and your project defaults will be copied alongside.

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US Custom Load Combinations

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AU/NZ Custom Load Combinations