A great topic for a BRIEF article. I articles that focus on an issue
that is not well understood instead of rambling about a dozen
different things. You up for it? We can certainly provide help with
any drawings or figures.
Roland
On Mar 20, 2008, at 9:16 AM, Joe Hankins wrote:
Having spent the first 15 years of my career with FM in the heart
of furniture company, I dealt with lots of spray booths and spray
booth fires.
The purpose of the sprinkler in the exhaust stack is to control
fires in overspray that accumulates on the inside of the stack. As
there are typically joints in the stack that can open up when
exposed to a fire, you need the sprinklers to prevent flames coming
from inside the stack impinging on the roof deck. To do this, you
need to put the sprinkler at or just below the level of the roof
deck. This is the way it's been done for years.
Joe
Randy Knutson wrote:
Dewayne,
I had an AHJ pull the Uniform Mechanical code once and told me I
had to have
the sprinkler within 36" of the top of the exhaust stack. The
exhaust duct
stood 60" above the roof. I had to put a little A.F. loop in with
a sprig-up
in the exhaust duct. I don't have the UMC and can't remember the
section. I just remember the sting.
Randy
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
Dewayne
Martinez
Sent: Thursday, March 13, 2008 8:11 AM
To: [email protected]
Subject: Sprinklers in paint booth exhaust ducts
Anyone know where to find design information on the placement of
heads
in paint booth exhaust ducts?
I can't seem to find it in NFPA 33.
Thanks,
Dewayne
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