Ed and Steve,
For what it's worth the Hanging and Bracing subcommittee of NFPA-13
considered just such a proposal
during the recently concluded meetings in Tucson, and voted unanimously
to reject it. I'm not suggesting
the issue is dead, merely that a simple proposal such as that, without
any guidance or clarification, particularly
in the definition of what constituted a "long drop" was a part of that
decision.
I'm not surprised at all that the Division of the State Architect has
come up with some ruling without any
guidance or substantiation. My experience with them has been that they
live to do stuff like this.
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
IMPORTANT NOTICE: This correspondence is not a Formal
Interpretation issued pursuant to NFPA Regulations. Any opinion
expressed is the personal opinion of the author and does not necessarily
represent the official position of the NFPA or its Technical Committees.
In addition, this correspondence is neither intended, nor should it be
relied upon, to provide professional consultation or services.
Ed Cyr wrote:
Steve,
Thanks for forwarding my thread on. We will wait and see what shakes out.
No, I have not seen the amendments to NFPA 13, 2007. Can you forward this to
me offline?
BTW, We are required to sprinkler garages in 13D applications by direction
of the local AHJ. We use .05 density and residential sprinklers.
I'll help with your rebuttal.
Ed
Alpha Fire
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Steve Leyton
Sent: Friday, February 08, 2008 10:18 AM
To: sprinklerforum@firesprinkler.org
Subject: RE: Restraint of Drops
Good question Ed - I've forwarded your e-mail to Dave Casey, the FLS
Chief at DSA and I'll get back to you with his reply.
On a related matter (here in California), has anyone seen the
recommended amendments to the 2007 13's from the Automatic Extinguishing
Systems Advisory Committee (AES)? This is an ad-hoc group that makes
proposals to the State FM for adoption. This document contains (IMHO)
some of the worst-conceived changes I've ever seen; if you don't have it
and would like to see it please send me an e-mail off line and I'll send
you a PDF I made of the excerpted summary of proposed revisions.
Ironically, this was conveyed to me through Ken Wagoner here in SD
County, who got it from NFSA (Cecil - you guys aren't all bad). I
would like to compile an articulate rebuttal (rebuke might be a better
word) and if anyone can help me/us put together an item by item
response, I'll be the clearing house.
Here's a sneak preview: Garages in NFPA 13D designs shall be protected,
and shall be designed using spray sprinklers at 130 s.f. per sprinkler
discharging .15 gpm/s.f. over 260 s.f. By my reckoning, that's 39 GPM
minimum, and more likely a 3-sprinkler design (haven't encountered
exactly 130 s.f. spacing in an SFD garage in my life) that could require
as much as 55 GPM. Add the 5 GPM domestic allowance and you may find
yourself telling the owner or builder that you'll have to go even bigger
than a 1" meter. For the life of me I can't figure out what they're
trying to do ...
Steve Leyton
Protection Design & Consulting
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Ed Cyr
Sent: Friday, February 08, 2008 9:15 AM
To: American Fire Sprinkler Association
Subject: Restraint of Drops
Forumites,
The Dept of State Architects (DSA), State of California has issued "Fire
and
Life Safety Plan Review Submittal Guidelines for Automatic Fire
Sprinkler
Systems" dated December 2007.
They have required that drops over 4 feet in length must be restrained
to
prevent damage to piping and building elements.
Splay wires may be used for restraints of drops.
DSA is notorious for issuing these mandates without explaining the
reason or
the reference source for these requirements.
Questions:
1. How does one restrain a drop?
2. Do you restrain at the top, middle or end of drop?
3. What secures the splay wire to the drop?
4. What do you attach this restraint to?
5. Are flexible drop connections excluded?
Has anyone faced this issue?
Are there code requirements that I may not be aware of?
Any input on this subject would be appreciated.
Thanks,
Ed Cyr
Alpha Fire Sprinkler Corp.
San Luis Obispo, CA
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