Hello, In general, the findings and suggestions for data entry in the project are as follows; -There is a vertical continuity problem in columns S11 and S19. It is shown as an error in the geometry control) -The gaps opened with the floor space command are not taken into account in cassette and ribbed floors. Floor edge and, depending on the situation, beams should be used for the gap. - It would be appropriate to model the basement curtains as shells and to mark them as basement. - There is a level in the basement on the ground floor... It is recommended that the BP1 and BP2 curtains be entered as panel objects and modeled as shells so that the raft foundation at 120 cm elevation can interact with these curtains. (As a second option, if a solution is desired to be made without connecting the raft at 120 cm elevation with columns and shears descending to the zero elevation of the foundation, the existing boundary of the level can be formed from 30-40 cm below.) - There is no need to create transverse threads on ribs that do not exceed 4 meters. Note: In order for the raft slab networks to form correctly when you model the basement walls as shells, in the Rat foundation-Superstructure connection method in the Analysis Settings, set the ratio as 0.40H for the Enlarge Connection Region option. Good work