Pennsylvania Code
Title 34 - LABOR AND INDUSTRY
Part I - Department of Labor and Industry
Chapter 57 - DIVISION C-4 SINGLE EXIT APARTMENTS
MANUAL AND AUTOMATIC FIRE ALARM SYSTEMS
Section 57.52 - Automatic alarms

(a) An automatic fire alarm system shall be provided for C-4 occupancies except for buildings totally protected by an automatic sprinkler system. The automatic fire alarm system shall comply with § 50.52 (relating to automatic system), except that buildings with 12 or less apartments may comply with paragraph (4).

(b) Smoke detectors shall be located in the corridors, stairs and rooms not located within an individual apartment. This shall include unfinished basements. Heat detectors or other detection devices may be approved by the Department for use in special rooms such as boiler rooms, furnace rooms, incinerator rooms, and the like. Detection devices required by this paragraph shall be interconnected with required fire alarm systems.

(c) In addition to the automatic fire alarm system required in paragraph (2), each apartment shall have a minimum of one smoke detection device. This device may be a single-station detection device which is not interconnected with the automatic fire alarm system. Single-station detection devices shall be listed as meeting U. L. 217, 1980 Edition.

(d) Smoke detectors listed as meeting U. L. 217, 1980 Edition, as multiple-station smoke detectors shall be provided in the common areas, such as halls, corridors, stair towers, basements or similar areas. These detectors shall be interconnected so that all devices sound an alarm conditioned upon activation of an individual detector. The smoke detectors may be ceiling or sidewall mounted, with a minimum of a 4-inch clearance from a ceiling to wall jointure, measured from the jointure to the top of the detector.