You can make the beams in the marked area (also, according to the plan, all the beams on the leftmost vertical axis) 25/50 and lay the floor platform by 15 cm. When you do it this way, shear safety error may occur in your columns 2 and 4 opposite. You can also evaluate this situation. Preferably, you can connect the curved beam that you connect to the curtain on the lower edge of the elevator by extending the curtain vertically. Good work. Sent via iPhone using Tapatalk