Hello, there are two parking lot designs attached. I ran into a problem like this. When all the beams are at the same level, there is no problem, but when I lower the beams on the middle axle and rear axle by 3 cm, an axial force of 55 tons occurs. structure + coating + snow load (without reduction) total load is approximately 10 tons and there are 6 columns. There is something strange. I encountered such a problem when I played the beam level from the node point. Where does the problem come from? Note: I encounter the same axial load (55 tons) when I do not put the coating.