Hello My suggestions; --If you choose your building mixed, you can't get Rx=6, Ry=7, you should get Rx=5, Ry=5, --Select RX, Ry with the wizard's guidance, --When you choose with the wizard's guidance, there are places you need to balance, --Semi-rigid make a solution, follow the path as in the link when making the account, Item 4.3.6.2 Account * IMPORTANT EXPLANATION * Message by Ismail Hakki Besler » 17 Apr 2020, 11:05 [url =https://www.idecadsupport.com/forum/viewtopic.php?f=5&t=8798]viewtopic.php?f=5&t=8798[/url] --Make stair bracing, --Fix errors in geometry control, --After correcting the above, you increase the reinforcements in raft flooring, Ünver ÖZCAN