I am designing a store. the total building size is 100 wide by 200 long. the first 60 feet is 12' walls then it steps up to 16 ft walls for the warehouse in the back. in the warehouse I am building offices that are 25' by 100' with 8 ft ceilings. I want the top of the offices to be decked for storage space. when I draw it up it makes my exterior walls drop down to 8'. how can I make the interior walls 8 ft and keep the exterior walls 16 ft? if I make a second story it drops all my walls down to 8 ft.
