NYS Residential Smoke Alarm/Detector Location

[GLDCSTAV]

Hello all,

I have not come across this type of a situation before and wanted to ask what would be required.

We are currently roughing a new residence and the Master Bedroom and Study spaces have a non-typical ceiling (see attached sketch).

In this scenario, I believe that two smoke alarms would be required within the "3' horizontal plane" on either side of the ceiling for both spaces as there are two ceiling peaks per room.

Both the contractor and Architect do not want to see two smokes alarms on the ceiling. I am unclear as to what would be required here and if only installing a single alarm would meet code.

The same question holds true for the Alarm company that is providing supplemental spot smoke detection with their smoke detectors.

Thank you in advance for your guidance.

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[gadfly56]

Hello all,

I have not come across this type of a situation before and wanted to ask what would be required.

We are currently roughing a new residence and the Master Bedroom and Study spaces have a non-typical ceiling (see attached sketch).

In this scenario, I believe that two smoke alarms would be required within the "3' horizontal plane" on either side of the ceiling for both spaces as there are two ceiling peaks per room.

Both the contractor and Architect do not want to see two smokes alarms on the ceiling. I am unclear as to what would be required here and if only installing a single alarm would meet code.

The same question holds true for the Alarm company that is providing supplemental spot smoke detection with their smoke detectors.

Thank you in advance for your guidance.

Sent from my iPhone using Tapatalk

New York state is on the 2013 edition of NFPA 72. IFF smoke detectors are required in this area (bedroom, hallway outside sleeping area, path of exit) then you are correct, you will need one on each side. I mean, really, if something on the left wall caught fire (couch, for example) how is a detector in the right half going to help, until smoke completely fills the left hand side and starts to spill over the center reverse peak? Someone should yank both of their licenses. Since you have back-to-back shed ceilings, see 17.6.3.4 and illustration A.17.6.3.4(a) for how to arrange the detectors.

 

[GLDCSTAV]

Thank you for your reply and provided information. My thoughts exactly on the detection which is what I stressed but was argued against. Can't stand it when they argue against code especially for aesthetic purposes.


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