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907.2.11.2 Groups R-2 (Except "SRO" Occupancies as Defined in Section 310.2), R-3, R-4 and I-1
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Single-or multiple-station smoke alarms shall be installed and maintained in Groups R-2 (except "SRO" occupancies as defined in Section 310.2), R-3, R-4 and I-1 regardless of occupant load at all of the following locations:
- On the ceiling or wall outside of each separate sleeping area in the immediate vicinity of bedrooms.
- In each room used for sleeping purposes.
Exception: Single- or multiple-station smoke alarms in Group I-1 occupanices shall not be required where smoke detectors are provided in the sleeping rooms as part of an automatic smoke detection system.
- In each story within a dwelling unit, including basements but not including crawl spaces and uninhabitable attics. In dwellings or dwelling units with split levels and without an intervening door between the adjacent levels, a smoke alarm installed on the upper level shall suffice for the adjacent lower level provided that the lower level is less than one full story below the upper level.
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907.2.11.2 Fire Protection Systems, Groups R-2 (Except "SRO" Occupancies as Defined in Section 310.2), R-3, R-4 and I-1
Single-or multiple-station smoke alarms shall be installed and maintained in Groups R-2 (except "SRO" occupancies as defined in Section 310.2), R-3 ...
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