hello, While I was checking the geometry in the project I created for the purpose of experimentation, although I have 31 tiles, I get an error on the 32nd tile. At the same time, I get the warning that my slab thickness is in accordance with the specification but the tile size is insufficient. Thank you in advance.[/ quote] Hello There was a connection problem of the nodal points in the curtain area behind the stairs. I fixed it on 12 floors and copied it to all floors except the basement. You can find the corrected project in the appendix. The basement floor is modeled independently from the upper floors. I recommend copying the ground floor to the basement floor and defining the basement floor curtains. I recommend connecting the curtain ends with the beam so that you can overcome the stapling control in the floor slabs.