This method came to my mind, but instead of 15cm parapet, 25cm parapet It will be unnecessary dimension to make a reverse beam of '. As @civilization said, it is necessary to load. I do it by giving wall load on the beam."Ismail Hakki Besler":2wqtscpa" said:You can enter the parapet with a beam. This way, you can calculate the parapet you entered correctly and create its drawings.