You wrote to me privately, I reply here. Friends who will write answers so that it does not fall into repetition. First; You studied the file in V8, you sent it in V7 format. I tried to open the file yesterday to reply to you, my computer crashed. If you do not delete the steel elements from the sections when switching to V7 format, V7 cannot open and crashes. Moreover, the file I was working on at that time was also gone. I had to go back to the bak file. You throw the V8 again. V8 is common enough already. Let's come to your problem; Your ground values are too low. Are you sure that such low value ground is not group D? If it is group D, you know you have the right to increase it by 50%. I don't believe this ground value is that low. I think your floorman may have exaggerated. (It was biased, but because we became very profitable) The fact that the ground value is close to 1.00 means a ground that needs improvement now. I think you, as a civil engineer, should get an idea about the ground. One of the reasons that ground safety does not recover is due to negative ground tension. It reaches a value of -2.04 t/m² in a region. I also think that calculating according to the average stress does not make much sense. Basically there are places where you can amp up. Be sure to do it. It will significantly affect your ground stresses. Check your loads. For example, you have defined a wall load even on the beams that you only use to connect the columns. Check the loft loads as well. Avoid unnecessary slab thicknesses as well. All this is related to the mass of the structure and therefore to the soil stress. (Your safety tension is already very low) Although there is no curtain in the system, you have chosen the behavior coefficient of the carrier system as 7 and you should make 8. I haven't had a chance to try. I don't know what kind of result you can get based on the above information. I wish you good work. N. YILMAZ