[FWD: CMSA Sprinklers and Isle Widths]

Wed, 23 Aug 2017 17:51:17 -0700



-------- Original Message --------
Subject: CMSA Sprinklers and Isle Widths
From: "John Paulsen" <[email protected]>
Date: Wed, August 23, 2017 5:33 pm
To: "'Sprinklerforum'" <[email protected]>

Good Afternoon Foramites:
 
We are working on a freezer food storage project utilizing K 16.8 CMSA sprinklers on double interlock pre-action systems. The deck height is 40’, max storage is 35’ and protecting a Class II commodity.
 
Question #1: The owner wants to reduce the isle width from 10’-6” to 6’-6” and he believes this has an impact on the CMSA spacing. As far as I can tell from Table 16.3.1.1, isle widths greater than 4’ are permitted without changing the 10’X10” spacing, correct?
 
Question #2: Now that I’ve starred at Table 16.3.1.1 (2013) for the last hour, it appears to me that a single row of rack sprinklers are required at 20’ with a horizontal barrier when using CMSA sprinklers, correct? Table 16.3.2.1 only serves to confuse me more.
 
It looks like to me that rack sprinklers can be eliminated when you go to ESFR sprinklers in accordance with Table 16.3.3.1
 
Thanks,
 
John Paulsen – SET
Crown Fire System Design
6282 Seeds Rd.
Grove City, OH 43123
P – 614-782-2438
F – 614-782-2374
C – 614-348-8206
 
 
 
 
 
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