We have a residential project where we are looking to use a residential sidewall sprinklers. The project is under NFPA 13 - 2016 Edition
On a wall where we have a sprinkler, there is a a projecting 3-inch x 24-inch wide x full-height obstruction bump-out of the wall. How far away from this would the sprinkler need to be? Or, do I need to add a sprinkler on the other side of the obstruction? I'm wondering if these could be considered "shadow areas" because the shadow area would be under 3 sqft (NFPA 13-2016 8.10.7.1.4, and A.8.1.1(3)). Thanks in advance. Sent in anonymously for discussion. Click Title to View | Submit Your Question | Subscribe
8 Comments
Glenn Berger
10/19/2021 08:16:31 am
A plan sheet showing the configuration would help for providing proper assistance. My gut feel answer is: Provide a sprinkler on the opposite side of the projection.
Reply
RJ
10/19/2021 08:45:31 am
If this is a residential project, and you are using residential heads, wouldn't this be under NFPA 13-R?
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SCHULMAN
10/19/2021 08:53:32 am
i don't think 3" projection from the wall (regardless of width?) constitutes anything.
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Jesse
10/19/2021 09:09:33 am
Would love to know the full dimensions of the area.
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Alex
10/19/2021 11:10:41 am
Hi Anonymous,
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Mike
10/19/2021 11:19:21 am
Check with the manufacturer's data sheet or call there technical support.
Reply
Jack G
10/19/2021 11:23:44 am
My initial reaction is a 3 inch projection into a room would not be detrimental to any sprinkler spray pattern.
Reply
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