Hello, In your project, the elevation of the intermediate landing slabs is not compatible with the beams to which they are connected. (It is given as a warning in the geometry control) The non-beam edge of these slabs should be created using the slab edge. (Or instead of defining the slab, a load definition can be made for the relevant beams.) When the intermediate landing slabs are deleted or not operated as a rigid diaphragm The problem of max purchase in columns is solved. KAs(-) warning is due to insufficient stirrup. In the reinforcement selection dialog, the problem is solved when the analysis is performed by marking the stirrup diameter of 12 on the columns. Apart from that, the ribs of the floors D89 on the ground floor and D99 on the 1st floor are not defined continuously with the other floors. You can also examine the attached join.pdf file for the solution of the join break safety (B) problem in some columns. Good work