i have analysed a structure and have got 1 error that says above CASE BEING FACTORED DOES NOT EXIST Proposed 2 Storey Residential.stdplease help me. i have attached my model as well.
6661.Proposed 2 Storey Residential.std
I have modified your model. There were a lot of issues. Please check the file. Some of the changes made are as follows.
1. Reference loads should be placed ahead of seismic definition.
2. Static Seismic primary load cases will be the first load case to be defined.
3. Delete unnecessary perform Analysis commands.
4. Delete Envelop definition as it is blank.
Apart from that you should provide rigid floor diaphragm to take care the torsional effect in seismic cases.
https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/21200/rigid-diaphragm-faqs
https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/4014/reference-loads-an-introduction