Scott,
I think Scot Deal raised an interesting question. He's correct in
the increase in area of 30%, per 12.5.1, but the question remains, if we
have in-rack sprinklers, do we increase the number of them flowing in a
dry system calculation? If so, why? If not, why not? The table Scot
referenced doesn't allow the use of CMDA sprinklers without in-racks as
well, so what do we do about the number flowing in the calc?
Anyone have input on the answer?
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
On 5/31/2012 10:13 AM, Scott A Futrell wrote:
Scot,
I don't see anything that sends you back to 11.2.3.2.5 to increase the in-rack
design requirement by 30%. 11.2.3.2.5 is an area of sprinkler operation
increase, not a number of design sprinklers increase. Intuitively, yes.
Prescriptive, no.
Scott Futrell
(763) 425-1001 x 12 Office
(612) 759-5556 Cell
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of å... ....
Sent: Thursday, May 31, 2012 11:50 AM
To: [email protected]
Subject: dry-pipe with in-rack/ceiling protection of Class IV to> 25 ft in
open racks
2010 NFPA 13
When one uses dry-pipe with combination in-rack/ceiling sprinklers to protect
Class IV to greater than 25 ft per Table 16.3.1.1, the 30% increase applies to
both in-rack and overhead sprinklers, yes?
scot deal
excelsior fire
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