Hello sir, Iam getting instability in joint 63 in the mid of the floor beam. Tried all possible solutions I know off, but cant solve the instability issue. Can you please help me fix this problem. No lateral loads in this building, only gravity loads…

Hello, I was carrying out an analysis for a frame and was informed of instability at a joint. Although i have two pinned joints in 3D model space , i have included releases to take care of out of plane moments and torsion on the top beam. However, the…