Hello Mr. Emre B1 Curtain between floors in weak floor irregularity The ratio of /column/wall total shear areas is checked.You can examine it from the attached picture and TDY Table 2.1. Column and Shearwall shear areas are calculated automatically, Wall shear areas are calculated from the loads on the Beam, also in the Irregularities tab of Analysis / Floor parameters menu, Akx and Aky sections, X and Wall shear areas. Y Direction Wall cutting areas (in m2) can be entered."emrebagdu":372lkpgt" said:"WEIGHT FLOOR=GROUND FLOOR, ni<0.60, increase system rigidity". What are the ways to fix this error?