Hello,
I have problems with calculating some pipe supports.
The columns of the pipe supports are HSS and the cantilever beam that support the pipes are UPN.
Beam check: FAIL. The ration for the HSS is "Infinity", CRITICAL CONDITION: HSS T+SH+F+A.
Using instead 2xUPN 160 (back to back) the beam PASS and the ratio is 0.81.
What is the problem? STAAD.Pro can perform the check for HSS?
Thank you very much for your help.
Alex