Mr.s; In my attached project, I get a Çd error in the basement floor d32 slab and when I look at the "slab static and reinforced concrete reinforcement calculation" section from the reports, I see that there is something strange in the "medium Md" tab. Also, when I do a slab analysis, some parts of the finite element lines created by the program during the analysis are clean and clear as if I divided them with beams. I see that some parts of the net are included in the analysis as if they are a complete slab, outside the parts I have divided. Apart from that, what is the problem with the ground floor d20 slab? Thanks for your interest..