If I'm picturing this one way I'd say if there was no separation other than visual like a valance, a floor elevation difference, or a change of carpet pattern then there is no corridor. If in another visualization where there is a corridor to either side of a wide opening from the lobby then the QR should extend with a QR sprinkler 1/2S inside each corridor for the extension of the higher hazard area into the lesser.
On Thu, Dec 15, 2022 at 10:10 AM J H <design.azfire...@gmail.com> wrote: > Ref: NFPA 2013 6.4.7 > > Use of residential sprinklers are permitted in corridors, foyers, hall > etc. under 6.4.7. However, lobbies in hotels and motels are > expressly forbidden to have residential sprinklers in this section which > leads me to a couple of questions: > > What about the corridors connecting to the lobby? Picture a layout like > the letter T and the lobby is in the stem of the T with two corridors on > either side. > > If you could use residential sprinklers in these corridors where would the > cutoff point be between using quick response in the lobby and the > residential sprinklers in the corridors when there is no separation between > them? Would NFPA 13's requirement for quick response to be used throughout > light hazard occupancies apply requiring quick response sprinklers > throughout? > If it does then it seems that all the corridors of the 1st floor of this > project would require quick response sprinklers. > > In my opinion it would require quick response throughout on the first > floor but I want to bounce this off the forum since my mind is in a fog > today. > > Thanks, > > JH > > _________________________________________________________ > SprinklerForum mailing list: > https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org > To unsubscribe send an email to > sprinklerforum-le...@lists.firesprinkler.org
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