design-4 (edited).STD
Here is the STD file for investigation.
Hello Simon,
I tried to open the model in my system and found a lot of error related to plates as shown below.
Can you please tell me which version you are using? I believe there are some modelling errors causing this issue.
Thanks for entertaining my concern. I have already solved the issue.
I am not aware on what version I am using, because a colleague installed it for me.
Glad to know that the issue is solved. You can always check the version number going to File> Help > About STAAD.Pro.
Also the version number can be checked from Control panel too.