We have a project that is a 4 story residential building and within each bedroom unit there are soffits along each wall. These soffits do not exceed 24-inches.
Based on Table 220.127.116.11.4(c) in NFPA 13 (2019), it says we can neglect the obstruction and place our sidewall sprinkler off of the wall behind the obstruction.
This situation I am describing is on the top floor where we will be providing sidewall coverage instead of pendents.
My question is whether or not we can space the sprinkler as close as we want to the soffit along the wall, given it being less than 24-inches?
I'm just having a hard time figuring out if the sidewall will be able to adequately protect the space under the soffit with not much parameters.
Thanks in advance.
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2/9/2022 08:45:41 am
no minimum is given except in
2/9/2022 09:06:20 am
The minimum distance is 6" (NFPA 13 (2019) 18.104.22.168).
2/9/2022 09:17:00 am
I'm having a hard time visualizing this. Do all 4 of the walls have soffits?
2/9/2022 10:20:09 am
I was doing a high rise Around the University area where there was a soffit along one wall but less then 24 inches and I would just measure the width of the soffit let’s say it’s ten inches so I would then measure off the soffit ten inches and place my side wall and how big are the rooms? Because i have had to place a pendent or two because the side wall would be maxed out
2/12/2022 01:58:16 am
Thanks for sharing this informational article with us.
4/29/2022 12:33:25 am
This is really an amazing article, keep up the good work. Really appreciated.
9/27/2022 11:07:06 am
I have a question on this issue as well. My situation is a ceiling pocket (all 4 walls have soffits) in a residential application (bedroom). I saw the above section from NFPA 13 (2019) 22.214.171.124.5 Soffits and Cabinets, but I didn't see an equivalent in 13D. Am I missing something? I have a house with no sprinklers in the high point of the ceiling pocket. All sprinklers are located lower on the under side of the soffit. Floor coverage is good, however I wonder about a delayed activation time should the fire start in the middle of the room. Any thoughts on this? Thank you!
9/27/2022 11:43:50 am
I did find the section in 13D (2019) 8.3.7...
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