In this situation, the walls are up to the deck and they are enclosed
rooms (or so it shows on the detail). If I eliminate the sprinklers
in the closets, I will only be calcing the sprinklers in the narrow
hallways and using OH to do that will not be a big deal. The ceiling
height (bottom of joist) is 8'-0" and if they drop the walls the 18"
to use the chain link, the wall height would be 6'-6". Since standard
doors are 6'-8", I would doubt this is going to happen.
At 05:39 PM 2/22/2008, you wrote:
I feel certain that this is not what the code intends. In the case you
describe we would consider it Ord. Hazard and calculate it as one room
without omitting the heads.
In virtually all of the cases like this we have seen, the owner has put
chainlink over the tops of the closets and held the walls down to keep the
deflectors 18" above them.
Have a great weekend,
Greg McGahan
Living Water Fire Protection, LLC
1160 McKenzie Road
Cantonment, FL 32533
850-937-1850
Fax: 850-937-1852
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Todd Williams
- FPDC
Sent: Friday, February 22, 2008 4:05 PM
To: [email protected]
Subject: Gaggle of closets
I am looking an apartment building which is to be designed according
to NFPA 13. On the first level, there is a room which contains 55 -
3'x5' tenant storage closets (mostly filled with shelves). These
would need to be sprinklered, which is fine, but the issue comes in
the hydraulics. Section 14.4.4.4.2 states that closets with a single
sprinkler may be omitted from the calculation. There could be up to
47 closets in the remote area. I have used this exception numerous
times, but never in this quantity. The standard says nothing to the
contrary, so I could eliminate 47 sprinklers in the remote area
because they are in closets? Is there something I am overlooking?
Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, Connecticut
www.fpdc.com
860.535.2080
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Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, Connecticut
www.fpdc.com
860.535.2080
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