warehouse.zip
wind calculation also in that folder.... try to fix this probem guys
Your model is having instability issues. Also, you have used STAAD PLANE. Can you please explain what you are trying to achieve using STAAD Plane? Also, please see the below links to eradicate instability issues.
https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/29020/zero-stiffness-warninghttps://communities.bentley.com/products/ram-staad/f/ram-staad-forum/144605/warning---instability-at-joint-2-direction-mxhttps://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/2046/staad-pro-instability-and-zero-stiffness-faq