I am using STAAD V8i to do steel design for a building per the AISC 360-10 code. First run analyze all members have passed, second run (by another party) some members have failed (KL/R big differences, critical load is different). knowing that nothing was changed in the model, so what is the reason for that?
I guess the second run was done in some other version than what you are using. Can you please confirm the version number in 2 cases? Also, please share the STAAD file to investigate at our end.
Thanks & regards,
Global Technical Support
The first version is STAAD.Pro v8i SS6 the second one is CONNECT Edition V22 Update 8.