2000 - re: procedure for sched. inspec. when they should be made

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• • 310.9.1 Smoke detectors. 310.9.1.1 General.Dwelling uni.ts,•congregate residences and hotel or lodging house guest rooms'that are used for sleeping purposes shall be provided with smoke.detectors. Detectors shall installed in accordance with the approved manufacturer's instructions. • 310.9.1.2 Additions, alterations or repairs to Group R Occupancies.When the valuation of an addition,alteration or repair to a Group P.Occupancy exceeds $1,000 and a permit is required, or when oneor more sleeping rooms are added•or created in existing Group R Occupancies, smoke detectorsshallbe installed in accordance with Sections 310.9.1.3, 310.9.1.4 and 310.9.1.5 of this section. EXCEPTION:Repairs to the exterior surfaces of a Group R'Occupancy are exempt from the rt ments of this section. • 310.9.1.3 Power source. In new construction, required smoke detectors shall receive their pri- mary power from the building wiring when such wiring is served from a commercial source and shall be equipped with a battery backup. The detector shall emit a signal when the batteries are Wiring shall be permanent and without a disconnecting switch other than those required for ov, current protection. Smoke detectors may be solely battery operated when installed in existing buildings; or in buildings without commercial power; or in buildings which undergo alterations, repairs or additions regulated by Section 310.9.1.2. • 310.9.1.4 Location within dwelling units. In dwelling units, a detector shall be installed in ea sleeping room and at a point centrally located in the corridor or area giving access to each sepa- sleeping area.When the dwelling unit has more than one story and in dwellings basement_ detector shall be installed on each story and in the basement. In dwelling units where a story o- rient is split into two or more levels, the smoke detector shall be installed on the upper level, e_ that when the lower level contains a sleeping area, a detector shall be installedFon each level.V sleeping rooms are on an upper level, the detector shall be placed at the ceiling of the upper le' close proximity to the stairway. In dwelling units where the ceiling height of a room open to th hallway serving the bedrooms exceeds that of the hallway by 24 inches (610 min) or more, smo detectors shall be installed in the hallway and in the adjacent room. Detectors shall sound an : audible in all sleeping areas of the dwelling unit in which they are located.