Thank you for your answer, Mr. Hakan, but there are many missing aspects of the program, which one should I count, you removed the walls from the polygon column, this time the internal dimensioning does not see these columns, the beam cannot be defined between the two polygon columns on the elevator door in the formwork plan mode, etc. I left the gap between the two walls you specified at the end of your answer for 5 cm insulation material, I drew a layered wall there, but I gave up on the space and joining problems. There is also a curtain column on the 30 cm wall to the left of it. It's a type of school project and it was drawn in autocad, I was thinking of adapting it to the idea and taking the footage, but I guess it's a very difficult method...