rfcomm2k Posted September 12, 2016 Share Posted September 12, 2016 Which takes precedence? In the room spec dbx the ceiling structure is set to 9.5" because I want the floor above to be supported by 2x10s. But in the room spec dbx for the room above it I have the floor structure set to 9.5 also. It appears that they are not additive (otherwise there would be 19" between ceiling below and floor above. However, I have a problem with the attached plan. If I open the first floor room dbxs for various rooms I get 3 different values for "Absolute elevations floor above". 1. If there is no room above (i.e. the left and right suites) the value is 118 5/8", but for rooms with another room above the value is 119 3/8. All other parameters are exactly the same. Where did this extra 3/4" come from? And why? 2. Then there is the Entry and entry closet, where there is no room above, just open space. The "Absolute elevations floor above" value for these two rooms is 111 1/2". I understand that where there is no room above there is no need for 2x10 ceiling joists. But IMO it makes framing much simpler to keep everything the same size, and 2x6s do not make good floor support. OK, I think I just answered my own question about #1 above, but I am going to leave this all here for confirmation. Is it the subfloor, which is 3/4" and obviously would not be present in an attic space? However, this still leaves me wondering about #2. Why are the ceiling and floor heights so radically different from #1? And is this the cause for the anomaly in the entry, where the front wall of the left wing seems to pass thru the entry drywall, just about the closet ceiling height? One more question. Looking at a camera view from the second floor toward the entry closet on first floor, I see no ceiling structure, even though I specified "ceiling above". What happened to the ceiling that is supposed to be there? block diagram 4A3a floorplan with landscaping.plan Link to comment Share on other sites More sharing options...
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