Jimmy,
Better look at Tyco's data sheets again. Based on what I just saw on
their website, in TD610,
it suggests that both the BB-1 and the AP attic sprinklers have listings
that start at 3:12. Refer
to table A on page 7.
PARSLEY CONSULTING
Ken Wagoner, SET
760.745.6181 voice
760.745.0537 fax
[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> e-mail
www.ParsleyConsulting.com <http://www.ParsleyConsulting.com> website
Jimmy Waite wrote:
Tyco's attic sprinklers are out b/c we only have a 3 in 12 pitch, all of
their heads start at 4 in 12.
Jimmy
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Todd
Williams
- FPDC
Sent: Wednesday, February 20, 2008 10:29 AM
To: sprinklerforum@firesprinkler.org
Subject: Re: Attic Calc
Jimmy,
The area trump the layout. You need to design to the 2535 area,
regardless of the system arrangements, unless Attic Sprinklers are
used. Have you looked into this option?
Todd
At 12:15 PM 2/20/2008, you wrote:
Good Morning all, I have a question that I need some assistance with.
I am
working on a dry system covering an attic over a middle school. The attic
is cold and has a pitch of 3 in 12. This project has several separate and
remote attic spaces. The space I'm asking about, is rather narrow, but
long. There are only two branchlines in the attic, but there are 17 heads
on a branchline. I want to add a second cross main, cutting the
brachlines
in half. When I do this my remote area does not meet the necessary square
footage (2535), but it does meet the required number of heads on a
branchline. So, do I then add heads feed from the second cross main to my
calc to meet the square footage? Or would calcing all the heads on one
cross main satisfy the intent of 13? I'm leaning towards adding heads to
be
on the safe side, but what does 13 say to do when you don't have enough
heads feed from a single cross main to satisfy your remote area?
Thanks to all in advance
Jimmy Waite
Burtell Fire Protection, Inc.
[EMAIL PROTECTED]
(406) 652-7697
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Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, Connecticut
www.fpdc.com
860.535.2080
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