Hello My Suggestions --The curtains are unidirectional, it would be better if you could turn one of them to the other direction, --K27 beam should center the P01 curtain, (connected obliquely) --The rib beams should not protrude more than d/2=32/2=16 cm from the column, - -Make the narrow side of the columns 30 cm, --2. You can reduce the live load on the floor ceiling and remove the wall loads, -- Increase the D8 live loads of the elevator floor, -- Brace the ladder and solve it together with the building, -- You can lower the outer rib beams from 40 cm to 20 cm. Take it easy Unver ÖZCAN