Hello, In the project in the pictures, the elevator goes down to the basement, so the foundation of the elevator curtains has been entered 1.5m below the continuous foundation level as a raft foundation. In this case, the raft foundation is completely independent of the continuous foundations. At the continuous foundation level, it is required to connect the elevator curtains to the continuous foundations with raft flooring. I could not perform such data entry in the program. When a raft slab is defined again at the continuous foundation level on the elevator curtain foundation, the system becomes a raft with beams. Thanks in advance and good work.