Similar to how we treat libraries where the 18 inch is violated by
the aisles.
Roland
On Sep 11, 2007, at 7:03 AM, Ed Kramer wrote:
Dewayne, I don't think you can apply the 3-times rule to partial-
height
walls. The 'appendix' section A.8.6.5.2.1.3 explains it's intended
for
obstructions where water can be thrown over & under (such as a
horizontal
pipe). If you have partial-height walls with less than 18" of
clear space
from deflector to top-of-wall, I think you'll need to install
sprinklers
within each 'compartment' (as if the walls extended up to the roof
deck).
Ed Kramer
Littleton, CO
We just looked at something similar yesterday AM, and #13-2002
8.6.6 was
pretty clear about just maintaining 18" clear below the deflector
being
adequate. The 3x rule started getting into the 6-deep cross-
referenced
rules where my eyes glazed over and we already had our answer. But
you're
half-way there!
glc
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
Dewayne
Martinez
Sent: Tuesday, September 11, 2007 7:19 AM
To: [email protected]
Subject: Floor-mounted vertical obstruction
I am not sure if this got up to the list yesterday so I am sending it
again.
It is odd that there was no response, any input would be appreciated.
________________________________
From: Dewayne Martinez
Sent: Monday, September 10, 2007 11:23 AM
To: '[email protected]'
Subject: Floor-mounted vertical obstruction
We are bidding a self storage building that will have partial height
walls (5ft on center) to 2ft below the deck with chain link fence
to the
deck. This will be designed to an OH II density so the rules for
floor-mounted vertical obstructions will not apply since they are for
light hazard only. If we can arrange it so that the wall is more
18in
below the sprinkler deflector can we ignore them per 8.6.5.3 (13
(o7ed))? If the top of the wall is closer that 18in to the
deflector do
we follow 3 times rule? Thanks for your input in advance.
Dewayne Martinez, CET
Design Build Fire Protection
[EMAIL PROTECTED]
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