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Two-family fire separation

The DensGlass detail is a gypsum area separation wall and more appropriate for townhouse separations. A two family could be separated by something less than that.

celticfunding should look into a simple UL Listed rated assembly or perhaps one from the Gypsum Association book. As I suggested on his other post, I think his concern is the continuity at the floor ceiling assembly for side-by-side units.
 
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