10-16-2009, 03:24 PM
(10-16-2009, 06:54 AM)tuanna Wrote: Dear DamirDz,
Always apply Rigid Diaphragm for each story level whether your slab is modeled as Membrane or Shell. But, if your slab is a thin element which would not act as an diaphragm action (for example non-concrete slab like Trapezoidal form Steel Sheet roof in an Industrial type structure ( as you know we use brace elements for stability) ), don't assign Rigid Diaphragm.
Regards
Tnx for your reply. I already modeled it like you said, but the problem is when i model the slab as membrane. I still have moments in the slab...
Can this be correct? I think it shouldn't be.