Wayne Moore

I think the most accurate method would be to analyze the hat section as you do before, but design it manually by using the reported forces of the member. The closest approximation probably would be to create an equivalent UPT channel section and design…

UPT sections which have a General type are designed as an approximated I section in STAAD.Pro. STAAD does not design it as a Hat section or some other section (with the only exception for EN 1993-1-1:2005 code). Some more information can be found here…