LEVENT I HAVE THE SAME PROBLEM IN A PROJECT. I HAVE ADJUSTED THE LADDER FLOOR (-150 CM LEVEL) FLOORING AS YOU DESCRIBED. BUT THERE WAS CURRENTLY UNDER FIELD. I CAN'T REMOVE IT (WHEN I HIGH THE BEAM LEVEL TO FLOOR LEVEL, THERE IS NO PROBLEM, BUT I HAVE TO WORK THE BEAM AT -150 CM LEVEL TO MOVE THE FLOOR). DO YOU HAVE ANY SUGGESTIONS ABOUT THAT? The K problem in P30 curtains is due to the lack of stirrups. If the analysis is performed by selecting larger stirrup diameters from the reinforcement selection dialog, there is no problem (; analysis can be evaluated by unchecking the "Apply ductile materials to rigid basement" option in the analysis settings / Tdy options. Some other notes: -Soil and In normal floors, the nodal point of the D23 slab to the slab edge does not occur on the beam to which it is attached. This flooring is the reason why it gives n more rigid diaphragm warnings ...) -The KAs(-) problem in the beams is due to the lack of stirrups. The problem can be solved by selecting larger stirrup diameters from the reinforcement selection dialog. --The elevation of the slabs at 150 cm elevation is not compatible with the beams to which they are connected. (If there are no beams on the relevant edges, draw the slab edge within a few cm of the beams. -The reinforcement axes of the D357 slab are faulty. -Check the option of the beam carrying the console slab from the beam properties to which the d10 slab at 150 cm elevation is attached. . Good work