Re: Z4 GIVES A RADGE ZG FAULT IN THE FLOOR CLASS Hello My Suggestions --You need to solve the project interactively with the superstructure according to TDY2007 item 2.2.1.5, --Increase the system rigidity when this solution is done, it gives raft laying and 2 laying errors, --The first problem here is that the ground safety is very low. And when there is a D group, you cannot increase it. If it does, the raft will relax a little bit (according to the superstructure interactive solution, it is 13.17>10 maximum 21.66>10 rather high) --However, you need to increase the system rigidity, --After all these are evaluated, you will decide whether to make ground improvement or not. (I recommend you to examine what solutions they have made in the surrounding buildings.) Ünver ÖZCAN