Re: Ground safety is negative My suggestions: --You don't have a rigid basement Remove the tick in the 1st basement, --You should buy A15, not A12, --When the above is corrected, it gives a relative floor displacement error, curtain addition is required, --Project name HOSPITAL If it is a hospital, it should be BKS=1 I=1.5, --Check if your ground value is low according to the new regulation, the ground bearing strength is given as qt. If there is no error, you should make floor improvement, --You can remove the walls in the attic, --You can remove the live loads in the attic, --Place beams around the floors given as faulty flooring on the 9th floor in geometry control, Ünver ÖZCAN