There are several interesting discussions that could take place on
this scenario.
First off, keep in mind in order to exclude the sprinkler in the
closet from the calculation, the size of the remote area must be at
least 1,500 sf (no reduction for QR can be applied). That certainly
impacts the decision, when you have only one closet though not as
much when you have a gaggle of them (isn't that the term applied to a
group of geese?). On the other hand, although you are omitting the
sprinkler discharge, the closet area IS included in the overall area
so it might be a wash.
I would not be so quick to automatically call them OH. Yes it is an
an area CALLED storage. Just like calling a speaking a platform a
stage could cause one to install hose connections on each side.
These closets are so small will they have more stuff than an
apartment closet? Even with more stuff, how much air is getting
there so the burning rate is much lower than experienced in the
open. I belabor this for two reasons. One is due to the restriction
on going to smaller than a K-5.6 is limited to light hazard. A k-2.8
would still provide a density of 0.49 gpm/sf (didn't you say 15
sf?). The other is that the room design in LH would be an approach
worth considering. OBVIOUSLY, one would want to discuss the
classification in detail with the AHJ before submitting anything.
I'd hope the smaller K-factor would be readily accepted though
suspect the second would be less likely. WHat say yea AHJs?
Roland
On Feb 23, 2008, at 7:23 AM, Ed Kramer wrote:
I think you have to ask yourself, Do you feel lucky? No, that's
something
completely different. Let's try another one, How many sprinklers
would you
foresee operating in any given fire? A fire originating in one of the
closets is going to get drowned by the sprinkler inside the closet,
so that
sprinkler and maybe 2 others in the hall. A fire originating in
the hall -
at least 5 in the hall and however many more it takes to makes you
feel
comfortable. If the total number of DA sprinklers in 900 sf (not
including
those in closets) exceeds the numbers from above, then you likely
can use
the closet loophole and still sleep well at night (with or without the
flaming stress management).
Time for my flaming breakfast
Ed Kramer
Littleton, CO
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:sprinklerforum-
[EMAIL PROTECTED] On Behalf Of Todd Williams - FPDC
Sent: Friday, February 22, 2008 4:26 PM
To: [email protected]
Subject: Re: Gaggle of closets
The drawings that I have do not detail wall construction except that
they will more than likely be sheetrock on stud walls and sheetrock
ceilings. Also, the closets have 4 levels of shelves that take up
most of the square footage. The issue here is that including the
closets, there would be approximately 60 sprinklers in a 1500 sqft
area and 40 in a 900 sqft area. Given that out square footage of each
closet is 15 sqft and the minimum EHP is 7 psi, you will get a
density of about 1 gpm/sqft from each head in the closet. OH1 vs OH2
is irrelevant.
_______________________________________________
Sprinklerforum mailing list
[email protected]
http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum
To Unsubscribe, send an email to:Sprinklerforum-
[EMAIL PROTECTED]
(Put the word unsubscribe in the subject field)
_______________________________________________
Sprinklerforum mailing list
[email protected]
http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum
To Unsubscribe, send an email to:[EMAIL PROTECTED]
(Put the word unsubscribe in the subject field)
