Let's be clear with this...for INSIDE applications
From Tyco's cut sheet...
The Model WS Window Sprinklers are listed by UL and C-UL, and NYC Approved
(MEA 335-01-E) for use as a "Specific Application Window Sprinkler" and as
open sprinklers for "Outside" use. These sprinklers are also recognized by
the International Code Council Evaluation Service, Underwriters Laboratories
of Canada (ULC), and the Building Materials Evaluation Commission (BMEC) for
use in the Province of Ontario, Canada as providing a two-hour equivalency
for a fire separation assembly, when installed in accordance with the NES
Report (NER 516), ULC/ORD-C263.1 Appendix A, and BMEC Report (01-11-263).
These heads are recognized by UL for use as "Specific Application Window
Sprinklers", but they are NOT recognized by UL, FM, or NFPA 13 as having any
equivalent hour rating.
NFPA 13 does not address hourly equivalencies, purposely so.
We have successfully argued many times that using the water curtain
provisions within NFPA 13 with standard pendent heads is sufficient. The
design parameters are virtually identical, the only difference being the
subjective reference to covering the entire surface of the glass.
Depending on the installation, it is very possible that standard pendent
heads can be positioned to accomplish this when compared to this one
manufacturer's head. I also have to wonder why the other head
manufactuerers have not rushed to market with similar products. Are we
missing the forest for the trees?
Jeff Hewitt, PE, SET, SFPE (Professional Member)
Corporate Engineer
Bi-State Fire Protection Corporation
241 Hughes Lane
St. Charles, MO 63301
636-946-0011
636-946-5172 (FAX)
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----- Original Message -----
From: "Daniel Kaczor" <[EMAIL PROTECTED]>
To: "Karen Purvis" <[email protected]>
Sent: Wednesday, October 31, 2007 1:48 PM
Subject: Re: Need Help fast
Hello Karen,
Wednesday, October 31, 2007, 11:59:41 AM, you wrote:
KP> I need to know if there is a code anywhere that states you can or can
not
KP> use a standard pendant head as a window wash. I have a glass wall that
I
KP> need to be fire rated and I have a contractor telling me by code he
can use
KP> a pendant head instead of a deluge head or a Tyco window sprinkler.
The only
KP> code I see that possibly address this is 21.20.1.2.1 and it only says
you
KP> have to use automatic heads. Any help!!!!!
If this is an atrium wall, the prescriptive requirements are in IBC
404.
A code-required fire rated wall must have been tested by an approved
agency such as UL. Two ways to get any-hour rating is with
Fire-protection-rated glazing in the wall or using the Tyco WS
sprinkler which is 2 hour only which obviously qualifies for 1 hour.
But the glass wall MUST follow the construction in the listings.
Here are links to the Tyco information and the ICC-NES report.
http://www.tyco-fire.com/TD_TFP/TFP/TFP620_07_2005.pdf
http://www.icc-es.org/reports/pdf_files/NES/NER516.pdf
--
Best regards,
Daniel Kaczor, Plans Examiner
[EMAIL PROTECTED]
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