§ 907.10. Smoke Alarms. The following
regulations shall apply with respect to smoke alarms in addition to
any other provisions of this code and shall be controlling to the
extent inconsistent with such other provisions:
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907.10.1. Installation Required. Smoke alarms shall
be installed in all NEW OR EXISING Group A, B, E, F, H, I, M, and
S occupancies.
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907.10.2. Power Source.
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907.10.2.1. In Group R occupancies and Group A, B, E, F, H,
I, M, and S occupancies, single-station smoke alarms shall receive
their primary power from the building wiring, provided that such wiring
is served from a commercial source and shall be equipped with a battery
backup. Smoke alarms shall emit a signal when the batteries are low.
Wiring shall be permanent and without a disconnecting switch other
than as required for overcurrent protection.
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907.10.2.2. Exception: Smoke alarms are permitted
to be solely battery-operated in buildings where no construction is
taking place, buildings that are not serviced from a commercial power
source and in existing areas of buildings undergoing alterations or
repairs that do not result in the removal of interior wall or ceiling
finishes exposing the structure, unless there is an attic, crawl space
or basement available which could provide access for building wiring
without the removal of interior finishes.
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907.10.3. Interconnection.
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907.10.3.1. Where more than one smoke alarm is required to be
installed in Group A, B, E, F, H, I, M, and S occupancies, the smoke
alarms shall be interconnected in such a manner that the activation
of one alarm will activate all of the alarms in the individual unit.
The alarm shall be clearly audible in all areas over background noise
levels with all intervening doors closed.
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907.10.3.2. Exceptions:
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(1)
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Interconnection is not required in buildings which are not undergoing
alterations, repairs or construction of any kind.
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(2)
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Smoke alarms in existing areas are not required to be interconnected
where alterations or repairs do not result in the removal of interior
wall or ceiling finishes exposing the structure, unless there is an
attic, crawl space or basement available which could provide access
for interconnection without the removal of interior finishes.
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