Hello friends. As can be seen, there is a U staircase around the elevator shaft in my architectural project (attached as pdf). How would you suggest I fix the walls of the elevator shaft? Where should I transfer the wall load? Meanwhile, the system was solved with hollow floor and flat beams. One of my thoughts is to stick a beam on the right side of the stairs where the elevator is located, from top to bottom, to support the bottom wall of the elevator and at least have them support the walls. It is not very healthy, but I say this is the most applicable... Your suggestions are important. Thanks in advance.