Hello, when the slab edges of the D04 landing slab are arranged as in the attached project, the analysis is performed. Note: The beam K06 is given a positive level in the basement. The columns S06 and S09, to which the beam is connected, must be given an upper level. Vertical continuity must be ensured by giving a level to the relevant columns on an upper floor. Good work"barsesa":xz3pcnr3" said:I get the error "The system cannot be resolved. There is no problem in the geometry control. I did not see any problem in the nodes. I would appreciate your help. I would appreciate your help.