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Fire rated ceiling

I

Inspector 102

Silver Member
Joined
Oct 22, 2009
Messages
356
Location
N/E Indiana
In review of a fire rated assembly, GA File No. FC 5750, I do not see any requirement for the individual layers of gypsum board to be mud/taped between layers. Is there a specific location that this requirement is found or is it not required because of the staggered joint application? Thank you.
 
In GA-600, look at the "General Explanatory Notes." Note 6 addresses the finishing of gypsum board and only requires the face layers (i.e., exposed layers) to have joints taped and finish to Level 1 per GA-214 and fastener heads treated. It further states that base layers in multi-layer systems do not require joints or fasteners taped or treated.
 
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