Dear Forum Memebrs,
I'm working on one project which involed hollow tube cold formed members(per EN10219-2) designed according to EN1993-1-1:2005. While do the staad analysis, the imperfection factor taken by staad as per buckling curve "a" instead of buckling curve "c" . I'm using staad v8i select series 3. How do i instruct staad to take imperfection factor as per curve "c" ? Please find attachement of Staad design. I have attached another design tool(RSA) results for the same case. Thanks for your time.
Regards
kaushal
