Bill,
Lay-in, schmay-in, it's still a downward discharging diffuser, right?
Ok, draw a circle with a 12" radius from the edge of the diffuser, all
the way around the diffuser.
Next, change that circle to a cylinder with the bottom level at 12"
below the level of the diffuser,
and the top level 2'-6" above the diffuser.
Now, if your sprinkler is inside that cylinder you just drew it has to
be intermediate temperature
rated. If it is outside, it can be any temperature.
Did that help?
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
Bill Minkel wrote:
It is not clear to me that the reference to a diffuser there is to a lay-in
type in a light hazard flat tile ceiling. But even if it is, the definition
makes no sense: DOWNWARD DISCHARGE: "Cylinder with 1'-0" or less radius from
edge extending 1'-0" below and 2'-6" above"; "edge" of what?, "2'-6" above",
above what?
Hep me out here folks, I know it's Friday, but still.
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of PCE
Sent: Friday, March 30, 2007 2:46 PM
To: [email protected]
Subject: Re: Curious
Bill,
I would start with Table 8.3.2.5(a) and go from there.
Item 1(c) is for a diffuser.
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
Bill Minkel wrote:
We have an AHJ saying our center-of-tile recessed 155F sprinkler is
too close to the HVAC supply diffuser in an A.T.C. (less than 2') I am
curious as to what section or paragraph in NFPA-13, 2002 references
this requirement? I can't find it, maybe one of y'all can hep me?
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