greetings again. I am adding another project, my problem here is as follows; I get an error in the geometry control because the beam slab edge overlaps in the sub-basement curtains coming under the terraces in the foundation design. There is a way to overcome this. Thanks in advance, the project is attached.[ /quote] Hello, The situation you mentioned does not create a problem in the analysis model. You may ignore the warning. Note: A tie beam has been inserted under some basement walls. The tie beams cannot be solved interactively with the superstructure. If an interactive solution is to be made with the superstructure, a continuous foundation must be entered under the panels. Good work.