Hello, There is no problem with the model. The raft is connected to the panel very accurately with the basic rigid arms. The problem can be solved by marking the reinforcement diameters of 12 and 14 for shear horizontal reinforcements in the reinforcement selection dialog. Alternatively, in the Analysis Settings Dialog TDY Options Tab, the -apply ductile materials to rigid basement- option can be unchecked. Note: Normal Floors do not have curtains. You can get the R 8. Good work