Bob, that's an excellent reference.
The text of that section remains pretty much identical in the 2022
edition. However there is annex material in that edition which reads
"/For situations not meeting the conditions of//8.1.3.1.1
<https://link.nfpa.org/publications/13D/2022/chapters/8#ID00013D000219>//,
sprinkler coverage should be determined in consultation with the
manufacturer and the authority having jurisdiction as appropriate for
the conditions/."
And you were spot on with the possible need to calculated more than 2
sprinklers in the compartment, as noted in A.10.2.4 of both editions.
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 7/18/2023 6:42 PM, Bob Knight wrote:
13D has a section that states that it is permissible to use
Residential sprinklers outside of their listings in circumstances like
yours (see 8.1.3.1.2, 2016). You may need to a four sprinkler calc
instead of 2, if I remember correctly.
/Thank you,
Bob Knight, CET III//
/*/Fire by Knight, LLC/*/
//208-318-3057/
FIREBYKNIGHT
On 7/18/2023 5:27 PM, Anthony Johnson wrote:
So I have a 13D residential project with a 12:12 pitch, beamed
ceiling configuration. In the last beam pocket area there is a
fireplace located below. It's literally impossible to place a
sprinkler far enough away from the fire place per 13D's required
spacing for both the ordinary or intermediate temperature sprinklers
without violating the requirement to be within 36" vertically down
from the peak. So it would seem I have to violate something in order
to get this to work. I can either use a quick response 286F sprinkler
which should cover the temperature issue but violate 13D's use of
quick response sprinklers which only allows for very limited usage of
such. Or I can violate the 36" down from peak requirement and use
residential sprinklers for that bay. At least that's the way I see it.
Any recommendations on how to address this?
Best Regards,
Anthony Johnson
Mountain Fire Protection
'Saving Lives and Valuing Property'
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