Tension Only Load Cases Fail to Converge

Emma R — Tue, 19 Apr 2016 13:56:03 GMT

When I run the RAM Frame analysis, I get an error that says "Warning(s) found during analysis. During iterative analysis with tension-only members, some of the load cases failed to converge. Please see "analysis log" report for further information about warnings." Even with the warning, the model runs and gives reasonable results. The analysis log does not seem to provide any further information, it looks as usual.

I can't find any reason for this error, and there are no errors or warnings in the integrated data check. I had been using this same model without issue for weeks and only got this error when I added an extra column line, which should theoretically be an insignificant change. The model is a small two story steel building with tension only x-braces and a sloped roof.

Any ideas as to the source of this error would be appreciated. Even though I'm getting results, I can't trust them with this error present.

Faster Way To Model Sloped Roofs?

Emma R — Tue, 15 Mar 2016 18:20:21 GMT

I know that sloped roofs are generally modeled in RAM SS by adjusting column heights, and I've used this method in the past for simpler roofs. Is there a way in RAM SS to define a plane and extend/cut the columns to that plane? Or a way to achieve something similar?

I'm trying to model a roof that slopes in two directions. As in, if the roof were a rectangle, only one corner would be at the lowest point and the diagonally opposite corner would be at the highest point. (As opposed to the case where one whole edge is at the lowest point and the opposite edge is at the highest point.) This means that every column is at a unique height. The architectural model is not 100% set so there is a chance the roof slope will change multiple times, so I was hoping to avoid going in and changing every column every time something changes.

Thanks!

Emma R's Activities

Tension Only Load Cases Fail to Converge

Faster Way To Model Sloped Roofs?