Hi My Suggestions: --According to your building DD2 (You can see that DD3 is not active when you choose from the wizard.) --Divide this three-block building into blocks, (R values and floor heights are different from each other). ) --Semi-rigid solution, --Check the coordinates, --Resolve the Elevator Curtains by grouping, delete the columns at the beginning and enter them as curtains, --Do not protrude left and right on the raft foundation in the middle block, --The foundations of the left-right blocks should not fit into the middle block, --When calculating network cannot be created error is seen on some tiles, -- Tick Elevator/engine room at ASMD floor, --You can reduce HY at ASMD and 3rd floor ceiling, --Make concrete value C30, -- Make the HY participation coefficient 0.6, (TBDY2018 table 4.3) --S60-61-62 no foundation under the columns, --K1 beams where the stairs will sit take the stairs to the mezzanine landing, Ünver ÖZCAN