§ 10-2.4. Structures not exceeding 35 feet in height., Chapter 10. BUILDING AND HOUSING, Code of Ordinances, Deptford

Every building, structure or dwelling not exceeding 35 feet in height above the mean grade, erected, substantially altered or presently occupied for residential purposes, shall be protected with an automatic fire warning system equipped with automatic smoke and/or gas detection devices principally intended for the protection of lives by indicating abnormal conditions as hereinafter provided:

Those systems or devices shall conform to the requirements of the 1975 Edition of the National Fire Protection Association designated as "NFPA No. 74," entitled "Household Fire Warning Equipment, 1975," and any amendments subsequent thereto (hereinafter referred to as "NFPA No. 74") relating to household fire warning equipment. The devices, commonly referred to as "smoke or heat detectors," must meet with the approval of the Underwriters' Laboratory, Inc. or Factory Mutual Research Corporation.

Such smoke or heat detectors may be either electrically powered, battery-powered or a combination of both. Battery-powered units shall contain an audible signal denoting failure of equipment. If electrically powered, the electric power supply for the smoke detector should be either on a completely separate circuit or on a circuit ahead of the service disconnect, so that the smoke detector circuit will always operate unless there is a failure of electricity coming into the building.

Upon activation, such smoke or heat detector shall provide an audible alarm which is to be so distinct and of such volume that it can be heard in all rooms of the building, structure or residence or dwelling unit with the door closed. Any alarm sounding device having less than a minimum rating of 85 decibels at 10 feet shall be deemed insufficient.

All such smoke and heat detectors shall meet the equipment performance tests set forth in Chapter 2, Section 2, of NFPA No. 74.

Detector location and spacing within the building, structure or dwelling unit shall be such that at least one such device shall be located on each floor of living space or in each sleeping unit of a multidwelling building, provided that where in a dwelling sleeping units shall be on different levels, at least one such device shall be located adjacent to that sleeping unit on each level, or, where such sleeping units, such as in a one-level dwelling, are substantially separated, then one such device shall be placed adjacent to each sleeping unit. In furtherance of the provisions set forth in this paragraph, detector locations and space requirements shall be as generally set forth in Chapter 2, Section 5, Chapter 3, Section 3, of NFPA No. 74.