Re: SEMI-RIGID ANALYSIS FAILS Your flooring is wrong where Ünver brain indicates. Delete and re-enter. Again, on the 9th floor, it seems that there is no connection to the k69 beam and s2 column. Again, there are errors in the same beam-column combination in the 5th, 4th, 3rd, 2nd, 1st, Z floors (S2 column). Also in the basement floor, the combination of s28 column and p23 curtain is wrong. See geometry check. Again in the basement, the K55 and K2 beams are not connected to each other. It could be one of the unsupported beams. If you are going to work at different elevations, you can work by putting some beams on different layers and closing those layers.