Dear Sevgi, MY SUGGESTIONS: I HAVE ALSO WRITTEN IN MY PREVIOUS ARTICLES. DO NOT FIX COLUMNS, BEAM, CURTAIN, FLOOR, FOUNDATION REINFORCEMENTS. I wonder why you fixed it. 1- Correct the errors in the geometry control, 2- S4, S6 columns do not overlap on the upper floors, 3- There is no use in defining tape beams on floors, it is not taken into account, 4- Make the floors on the side of the stairs by describing the edge of the stairs, not by creating holes 5- You have solved your structure as a semi-rigid diaphragm, but the support conditions are marked for the support of the stairs independent of the structure. In this case, your stairs will not be solved together with the structure. 6- To solve the stairs together with the structure, you should define the support conditions by marking the support conditions. 7- I recommend you to put a mezzanine beam for the stairs, 8- The thickness of the floor increases a lot in the middle ladder on the stairs, when it is supported on the floor on the floor, I recommend you to put a low beam between the stairs and the floor on the floor 9- Check the wall loads, they are all the same. - There are places with a hollow block thickness of 12 cm. Projects should not be compared with the amount of iron falling on 11 m2. I think it would be better to make a project by modeling it according to the right behavior. If this is done, the amount of reinforcement remains within reasonable limits. A few tons of iron and 10-15 m3 of concrete in a building don't matter to me. Take it easy Unver ÖZCAN