Hi
I have questions.
We have a sloped slab ( semi diaphragm)
When I check deflection in the X direction for EQ-X.
The diaphragm has bounced like below.
Can you let me know What the problem is with the model?
Thanks,
Lateral loads are always applied in the horizontal XY plane, so there is a component acting out-of-plane of the semirigid diaphragm. If the diaphragm has a low flexural stiffness or the out-of-plane stiffness is ignored (option in RAM Frame - Criteria - Diaphragm), that out-of-plane component can cause very large deflection. See also "How do sloping semirigid diaphragms affect the analysis?" on the following web page:
https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/3348/ram-frame---semirigid-diaphragms-faq