Can the ceiling pocked omission rules outlined in NFPA 13 for standard spray pendents and uprights be applied to standard spray sidewalls?
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5 Comments
Casey Milhorn
3/1/2021 09:44:19 am
Great question. So without mention of applicable edition, I'm referencing 2016 (personal preference, because I don't want to learn the new format of 2019 yet....lol).
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CJ Bonczyk
3/1/2021 10:02:22 am
Referencing NFPA 13 2019: In my opinion I would say no because code specifically provides the exception elimination of sprinklers within the pocket rules applies to standard spray and EC spray uprights & pendents as well as specific rules of residential sidewalls. No rules are indicated for standard spray sidewalls. Notice that residential sidewall ceiling pocket exceptions are different than upright and pendent pocket situations. Standard spray sidewalls depending on listing are 4"-12" down from the ceiling and have specific installation requirements below ceilings and soffits. Also depth of unprotected soffits are allowed to be up to 36" which would be unacceptable for sidewall use.
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Dan Wilder
3/1/2021 10:09:33 am
Referencing the 13-19' Ed.
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Franck
3/1/2021 12:11:36 pm
Just a guess (which could be part of a possible technical explanation): it is maybe related to the way sidewall sprinklers are activated in case of fire.
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Mark Harris
3/1/2021 06:33:43 pm
Well said Franck. Had a hotel project that limited number of suites had beam ceiling features and GC did not understand why those rooms needed different protection than the single sidewall in most of the rooms. I said because we don't know where the fire will start and need smooth ceiling for the sidewall listings.. I
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