Hello, Your project cannot be analyzed because there is no support defined on your platform. Under normal conditions in the program, when the lower end of the columns is not connected to any other element, it automatically creates its supports. However, in your project, the supports are not formed automatically because the columns are drawn on the beams. To create these supports; - Right-click the mouse in the perspective window and click the "Analysis model" command from the menu and switch to the analysis model. - Check "Show DN" and "show supports" options in the Analysis model tab in the visualization window as in the picture. - After selecting the joint points you want to support your platform, you can create your supports by clicking the joint point with the right mouse button and using the "add new support" command.