RE: Question regarding StaadPro CE file

Angel Castro — Sat, 07 Jan 2023 04:09:06 GMT

Thank you very much! I will take a look at the modified file. I have been assigned to develop more models so should be easier now using your advice.

RE: Question regarding StaadPro CE file

Abhisek M — Fri, 06 Jan 2023 05:35:30 GMT

Hello Angel,

I believe you are trying to design the model as a TRUSS where the members will be subjected to only axial force. If that is the case, I would suggest changing the first line in input command file to STAAD TRUSS from STAAD SPACE. Also, you need to delete the truss specifications you have used. Yes, truss means member will be subjected to only axial force, but in a STAAD SPACE model you can not release all the members meeting at a node or provide truss spec to all of them meeting at a node. This will provide instability. I have noticed that you have modelled the top and bottom chord as continuous members and those have no connections with the vertical members. Ideally in analytical model of STAAD, all members will be connected to the intermediate nodes to form a proper load path. SO, in this case you need to break the beams at every node point to establish proper connectivity.

I have made all these changes in the attached file and you will find zero warnings and errors in the attached modified file.

communities.bentley.com/.../Steel-Joist-Design-Model_5F00_AC_5F00_Modified.STD