Rocci,
here are my thoughts for whatever they're worth.
* Based on your description I speculate that 8.15.1.5 does not apply
because the space is concealead, rather than localized exposed.
* If the AHJ would consider the CLT as the equivalent of "wood joist
construction" then the more applicable section would appear to be
8.15.1.6, and the use of sprinklers which are listed for such use
would be appropriate.
* Standard spray sprinklers would raise the issue of the discharge
pattern not being fully developed as a clearance of 18" below the
deflector is required, and it doesn't appear that is present in what
you've described. See §8.5.5.1 and Figure A.8.5.5.1.
So I would recommend something similar to the Reliable KFR-CCS (or from
another manufacturer), as it is listed for the protection of such
spaces, where the depth is 36" or less. From the data sheet published
by Reliable the maximum coverage areas are either 196 ft² for 256 ft²
for spaces less or more than 18" deep, respectively.
That's my perspective.
sincerely,
*Ken Wagoner, SET*
*Parsley Consulting
500 West Mechanic Street
Harrisonville, Missouri 64701-2235*
*Phone: (760) 745-6181 *
*Visit the website
<https://linkprotect.cudasvc.com/url?a=http%3a%2f%2fwww.parsleyconsulting.com%2f&c=E,1,Y5zKJKPEh1mBEBqSR-VE9cUKl5y-eyP8BpvmE_5j9ZqW2eJbNphYzrCMBZ-2YuX6d-RRkHI4gQ1FV-cvOeCfRC58uZS9NiToZv2mx7909oCqLvCW_n5hDHeK&typo=1>*
On 8/11/2022 12:35 PM, Rocci 3 Cetani wrote:
Ok we have a situation where the structure is CLT (cross laminated
timber) with a few glue lams. the space between the CLT and the
ceiling is only 24” so I was planning on using the reliable KRF
sprinkler because it’s a combustible concealed space but it
technically doesn’t comply with NFPA 13 8.15.1.5 because it isn’t wood
truss, wood joist or bar joist construction….. The only thing it
complies with is the space is less than 36” and the upper surface (the
CLT) is combustible. Because of the depth of the space should I still
go with the concealed space sprinklers or use standard spray?
*/Rocci Cetani III, /**CET//*
/Senior Designer/
/Water-Based Fire Protections Systems Layout, Nicet Level III/
*//*
*Northern California Fire Protection Services Inc.*
16840 Joleen Way Bldg. A
Morgan Hill, CA 95037
P-(408) 776-1580 EXT.1010
F-(408) 776-1590
[email protected] <mailto:[email protected]>
www.norcalfire.com <http://www.norcalfire.com/>
CONFIDENTIALITY NOTICE: This message and any document accompanying it
may contain confidential information
belonging to the sender. The information is intended only for the use
of individual or entity named above. If you are not the intended
recipient, or the employee or agent responsible to deliver this
message to the intended recipient, you are hereby notified that any
disclosure, copying or taking of any action in reliance on the
contents of this information is strictly prohibited. If you have
received this transmission in error, please immediately notify us by
telephone to arrange for return of the documents.
_________________________________________________________
SprinklerForum mailing list:
https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org
To unsubscribe send an email [email protected]
_________________________________________________________
SprinklerForum mailing list:
https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org
To unsubscribe send an email to [email protected]
