10/23/2003-smoke detector info - Laserfiche WebLink

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310.9.1 Smoke detectors. 310.9.11 General. Dwelling units, congregate residences and hotel or lodging house guest rooms that are used for sleeping pur- poses shall be provided with smoke detectors. Detectors shall be installed in accordance with the approved manufacturer's instruc- tions. � 310.g.1.2 Additions, alterations or repairs to Group R Occu- pancies. `Vhen the valuation of an addition, alteration or repair to a Group R Occupancy exceeds $1,000 and a permit is required, or when one or more sleeping rooms are added or created in exist- in� Group R Occupancies, smoke detectors shall be installed in accordance with Sections 310.9.1.3, 310.9.1.4 and 310.9.1.5 of this section. E7iCEPTION: Repairs to the exterior surfaces of a Group R Occu- pancy are exempt from the requirements of this section. 310.9.1.3 Power source. In new construction, required smoke detectors shall receive their primary power from the buildin;wir- • ing when such wirin� is served from a commercial source and shall be equipped with a battery backup. The detector shall emit a sijn�� Vhen t�e batteries are low. Wirin� shall be permanent and without a disconnecting s�vitch other than those required for over= current protection. Smoke detectors may be solely battery oper- ated when installed in existing buildings; or in buildings witnout commercial power; or in buildings <<-hich undergo alterations, re- pairs or additions regulated by Section 310.9.1.2. 310.9.1.4 Location �•ithin dwelling units. In dwelling units, a detector shall be installed in each sleeping room and at a point centrally located in the conidor or area giving access to each sep- arate sleeping area. `Vhen the dwellin� unit has more than one story and in d�vellings with basements, a detector shall be in- stalled on each story and in the basement. In d�velling units where a story or basement is split into t�vo or more levels, the smoke de- � tector shall be installed on the upper level, except that when the lower level contains a sleeping area, a detector shall be installed on each level. `Vhen sleeping rooms are on an upper level, the de-� tector shall be placed at the ceiling of the upper level in close prox- imity to the stairway. In dwellin� units«�here the ceiling heijht of a room open to the hallway servin� the bedrooms exceeds that of the hallway by 24 inches (610 mrri) or more, smoke detectors shall be installed in the hallway and in the adjacent room. Detectors shall sound an alarm audible in all sleeping areas of the dwelling unit in which they are located. � �. • ,