Hello, In your project, some of the ribs and cassette slabs are not defined as beams. In some, typical beams are not continuous. In the attached project, typical beams of rib and cassette slabs in the 1st basement floor were created appropriately.You can also view the training video linked below and the informative article on the definition of cassette typical beams. /destek/egitim6/static/nervurlu_doseme/nervurlu_doseme.html[/url]"elifgorel":2f8bmtqh" said:Hi There are typical beam definition errors in the project, also the raft foundation cannot be drawn, the project is closed, thanks in advance for your help.