I have a project where I need to do an AISC Direct Analysis with notional loads. The geometry and seismic design category of the project are such that a modal response spectrum analysis is required by ASCE 7 for the seismic loads. I have typically built load combination cases using the repeat load command to factor basic load combinations and the notional load command to generate the notional loads within a load case. I am getting an error for my seismic load cases because STAAD doesn't like this approach for a dynamic load case. How do I build a load combination with notional loads and dynamic seismic loads?
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