Hello, Since you did not specify for which elements the problem exists, I have listed the points that I have determined by examining the project according to my own predictions: 1. The curtain, which is arranged as P05 on the lower floors, is arranged as P04 and P05 on the ceiling of the 4th floor. Since this curtain continues vertically, you should give it the same name. Just name the curtain P04-P05 on the 4th floor ceiling as P05. Thus, you are telling the program to use the height of that floor to create the end curtain. 2. You marked the curtains on the 4 axis of the mezzanine floor as basement curtains. However, those curtains go up three floors from the bottom. When you mark those curtains as floodplains, you do not allow the creation of the end zone. Uncheck BP10-BP11-BP12-BP13 vs Flooded. 3.2. In addition to the item, it would be more logical to use the basement curtain option only for curtains that are not in a rigid basement or that do not continue on top. In other words, you don't need to say that the basement perimeter curtains that are already in a rigid basement are flooded. 4. P08 curtain 25/175 is a curtain object and is connected to another curtain from the left. Here is a case specific to 6.0055 that did not originate from you. Therefore, either enter this element as 25/175 column object, or set the screen size to 25/200 if appropriate, or set the screen/column ratio to 6 from the panel parameters. My advice is to define the P08 curtain as a column object instead of a panel object if you are not going to model based on finite elements. I hope I was helpful to your problem. Best wishes for your work...