Hi, To solve the problem, the trim algorithm of the K41-K44, K61-K64 beams connected to the P21-22-23-24 panels has been changed. Note: * In ribbed floors, the floor gaps are created with the floor edge. (eg D89-90-63 on the Ground floor) The rib teeth work as a cantilever. Here, it would be appropriate to use beams instead of slab edge. All ribs and tapes in similar condition should be corrected. *one. The meshes of the D25 slab in the basement are not formed correctly. To solve the problem, the K25 beam was connected to the S32 column at the nodal point. Good work