THANK YOU ALL
So, what we have is this??????:
1. There's no such thing as a .10 density
under a roof that's pitched at or more than 4:12
2. Spacing can be as much as 15 ft on the
slope, but if it exceeds 8 ft on the flat,
a minimum head pressure of 20 psi must be used.
3. In no case can spacing on the flat exceed 10 ft.
Seriously, does anyone else find the table in NFPA confusing?
At 03:19 PM 3/12/2012, you wrote:
Vince,
In regard to slopeage stuff, I believe that what is being said is that the
you figure pipe length based on slopeage of pipe, but you figure coverage
area based on the flat. Hope that helps.
Bob Knight, CET III
208-318-3057
www.firebyknight.com
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Vince Sabolik
Sent: Monday, March 12, 2012 1:11 PM
To: [email protected]
Subject: SLOPAGE STUFF
Need some help w/ dry sprinkler spacing before I hang myself along with the
pipe!
Referring to Table 8.6.2.2.1 (a) - (spacing along slopes),
I have this condition:
Wood trusses, 36 in or less, pitching 6"/ft
The "bay" is 31-0 actual, resulting in a line spacing of 10-4, or 11-6½ on
that slope.
My question:
Does that slope dimension of 11-6½ - apply to the perpendicular dimension
of 10 ft in that table?
If not, can someone make sense of this?
Vince Sabolik, West Tech Fire Protection, Inc.
11351 Pearl Road / Strongsville, Ohio
44136 440 238-4800 Fax 440 238-4876
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