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RE: Ceiling Fire Protection

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Try Gypsum Association Fire Resistance Manual.  Mine shows a 2 Hr.
system  GA File No. 5724 (UL R2717-35) with 5/8" gyp over resilient
channel and another layer of 5/8" gyp.  But it is a tested floor ceiling
assembly though and requires 15/32" subfloor and 19/32" finish floor.

Vince 

> ----------
> From: 	Lutz,James[SMTP:JLUTZ(--nospam--at)earthtech.com]
> Reply To: 	seaint(--nospam--at)seaint.org
> Sent: 	Monday, June 12, 2000 3:29 PM
> To: 	seaint(--nospam--at)seaint.org
> Subject: 	Ceiling Fire Protection
> 
> Is anyone aware of an assembly that would deliver a two hour fire
> rating for
> a ceiling supported by 2x or 3x joists at 24 inch centers? I thought a
> couple of layers of 5/8 inch Type X gypsum board would do it, but
> apparently
> not according to the UBC. 
> 
> Jim Lutz
> 
> E
> 
> 10800 NE 8th Street - 7th Floor
> Bellevue, WA 98004
> (425) 455-9494
> (425) 453-9470 FAX
> 
> 
> 
>