I have a pesky model that I've been working through. Originally having issues with a sloped semi-rigid diaphragm at the high roof, I eventually changed it to be flat in order to get a first pass on the model.
Dead, Live, Roof, Seismic, COR, Eigen Solution are all able to run. However, when running any of the wind load cases (with P-Delta on or off) the RAM Container stops working (see picture below). No issues when running any of the seismic load cases.
I've found some other forum posts - specifically the troubleshooting guide https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/4004/ram-frame-troubleshooting-tn
Unfortunately this is a dead end since I don't get instability or even the ability to check forces, deflections, etc. to see where the error might be. It just stops working every time. Model can be uploaded if necessary.
As always - thank you Seth! I did have two decks modeled and 15.11 now allows it to run.
If you are running a diaphragm with multiple decks in version 15.07, you might be hitting this.
Answer Verified By: Jordan Rutherford