Hi All, I am confused by Ceiling Structure vs. Floor Structure in the Structure panel of the Room Specification dialog. What is the difference between the Ceiling Structure of the room below and the Floor Structure of the room above? For example, in a conventional platform two-story house, the floor structure of a 1st floor room is either a platform or a slab. If a 4" slab is used the floor structure is 4". The rough ceiling of that room is usually the undersides of the floor joists for the room above. I would say that is not a Ceiling Structure, but the Floor Structure for the room above and, therefore, assign a 0" Ceiling Structure to that room. Is this correct? I really get confused whem we move up one level to the 2nd floor. The rough ceiling in a 2nd floor room is usually the undersides of the floor joists of the attic room or the undersides of the bottom chord of the roof trusses. To be consistent with what I did before I would again say that is not a Ceiling Structure, but the Floor Structure of the attic room. Whoa! The program seems to be telling me something else!.... If I have specified elsewhere truss roof construction with a 2x6 bottom chord, the program defaults to a 5 1/2" CEILING Structure. In other words the program is telling me it is not the Floor Structure of the attic room, but the Ceiling Structure of a 2nd floor room. Say what? Why did we switch horses in midstream? Anybody know what's going on?
