Thanks everyone for your input. 

----- Original Message -----

From: "Tom Wellen" <[email protected]> 
To: "sprinklerforum" <[email protected]> 
Sent: Friday, January 22, 2016 9:44:00 AM 
Subject: Re: Roof dormer sprinklers? 

Does 8.15.1.2.18 work for you? Exterior soffits, eaves, overhangs, and 
decorative frame elements. 

Tom Wellen 

> On Jan 22, 2016, at 8:41 AM, Michael Hill <[email protected]> wrote: 
> 
> Most of the holes that I have seen for dormers are cut between joists, not 
> the full opening, and most of the dormers are more than 36" tall. The 
> plywood would create combustible construction as well, that would eliminate 
> ceiling pocket exclusion as an option. I guess if the type of construction 
> worked out and you met the other requirements, you could try to classify it 
> as a ceiling pocket. I think it would be an uphill battle with the AHJs in 
> our area, but might be worth a try. 
> 
> Mike Hill 
> 
> 
> -----Original Message----- 
> From: Sprinklerforum [mailto:[email protected]] 
> On Behalf Of Brad Casterline 
> Sent: Friday, January 22, 2016 9:33 AM 
> To: [email protected] 
> Subject: RE: Roof dormer sprinklers? 
> 
> If the hole cut in the plywood was the footprint of the dormer it would not 
> be a concealed space. Then, if the dormer dimensions played ball, could it 
> be a ceiling pocket not requiring sprinklers? 
> 
> Brad 
> 
> -----Original Message----- 
> From: Sprinklerforum [mailto:[email protected]] 
> On Behalf Of Michael Hill 
> Sent: Friday, January 22, 2016 7:53 AM 
> To: [email protected] 
> Subject: RE: Roof dormer sprinklers? 
> 
> I think it still falls under combustible concealed space and needs 
> sprinklers. Everyone that I have run across ended up having a hole cut in 
> the plywood for access to the dormer. 
> 
> Mike Hill 
> 
> -----Original Message----- 
> From: Sprinklerforum [mailto:[email protected]] 
> On Behalf Of [email protected] 
> Sent: Friday, January 22, 2016 8:24 AM 
> To: sprinklerforum <[email protected]> 
> Subject: Roof dormer sprinklers? 
> 
> I have an attic with decorative roof dormers built above the roof and 
> separated from the attic space below by plywood sheathing.  Do I need to 
> poke heads up into the dormers? I have been doing this in the past, but now 
> am wondering if it is necessary. 
> 
> 
> 
> Bill Menster 
> WFM Consulting Inc. 
> 
> 
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