Hello My suggestions; --There is a raft foundation on the ceiling and floor of the basement. --It's not like that. DD, laying on the basement ceiling between axes 2-5, --Make the raft seen on the ground floor CDH, raft foundation between axes 1-5 --In the basement floor, there is no S40 arm foundation, combine it with the basement raft foundation, --1, between the CE axes You need to take precautions for filling. --I think if you can, make a raft foundation without making any elevation difference. Take it easy Unver ÖZCAN