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Ceiling Height/Top Plate deviation

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    #11
    Originally posted by MPwuzhere View Post
    How do you get 1.25" difference? 5/8" Sheathing over 5/8" Gyp? Thought most homes the gyp bd is attached directly to the trusses so a 12' ceiling is in reality 11'-3/8"?
    1/2" GWB is typical in residential (IRC)
    5/8" GWB is typical in commercial (IBC)
    a lot of rated assemblies require metal furring / resilient channel in addition to the gyp which adds an extra 1/2" - 7/8"
    Revit for newbies - A starting point for RFO


    chad
    BEER: Better, Efficient, Elegant, Repeatable.

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      #12
      1/2" GB ceiling applied to 3/4" furring strips like 1x3's or 1x4's is pretty common. That's 1.25".

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