Todd,
I completely agree with Ed.
13.2.1 (5) would let it qualify as miscellaneous storage, and use Table
13.2.1, and Figure 13.2.1.
13.2.2 (2) tells you that the same, except you can apply
Chapter 11 for OH 1 & 2, and EH 1 & 2
So, if you apply 13.2.2(2), and Table 13.2.1, class IV to not more than
10'-0"requires OH2. The QR reduction in 11.2.3.2.3.1 (2) applies to OH
design.
Looks to me like you can apply that area reduction per NFPA 13.
*
PARSLEY CONSULTING
*
Ken Wagoner
760.745.6181 voice
760.745.0537 fax
website: www.ParsleyConsulting.com <http://www.ParsleyConsulting.com>
On 11/20/2013 7:15 AM, Ed Kramer wrote:
Todd, take a peek at 13.2.2 (2) (2013 edition).
Ed Kramer
Lawrence, KS
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Todd -
Work
Sent: Wednesday, November 20, 2013 8:45 AM
To: [email protected]
Subject: Misc storage and QR sprinkler deduction
I am working on a school project where there is a basement that will be used
for storage (3300 sqft, 13 ft ceiling). I am basing my design on 10 ft high
storage of miscellaneous stuff, which I am calling Class IV. This would be a
0.20/1500 sprinkler density, which is the same as the requirement for OH2.
Since I have a marginal water supply and am at the far end of the system,
minimizing the design is critical.
My question is this; can I use the RA deduction for QR heads in OH2 with the
curves for low piled storage? Or does the fact that this is storage negate
that reduction?
Must be my day for question....
Todd G Williams, PE
Fire Protection Design/Consulting
Stonington, CT
www.fpdc.com
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