Dear sir,
In my attached model I have given the tension only property to vertical bracing . But why this bracing is failing due to compression forces .there should be only tension forces in the bracing.auditorium FINAL ADD BR3 TRUSS STRT INCREASEN FINAL3.std
Please refer below link for solution.
https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/26838/compression-force-developed-in-tension-members