Hello, I have a two-storey building with I=1.5 Floor 130 m2 height 4 m 1st floor 130 m2 height 3 m I need 1.5 m flooding on a raft Do I need to define a separate floor for flooding Or take the 1st floor height as 5.5 m Should I solve it? When I define a separate floor for flooding, the system says the mode is insufficient and does not solve it. When I do not define a separate floor, reinforcement density occurs because the floor height is 5.5. Can you help with what should be?