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NFPA 13R helps you design and install life-saving sprinkler systems in multiple-family dwellings -- to safeguard people and property from fire.
For effective and economical sprinkler system installation in multifamily occupancies -- such as apartment buildings and hotels -- buildings, designers, owners, and AHJs rely on NFPA 13R: Standard for the Installation of Sprinkler Systems in Low-Rise Residential Occupancies. This comprehensive Standard takes into consideration the greater occupant loads and increased risks associated with stacked dwelling and sleeping units in these types of dwellings. NFPA 13R's requirements cover design and installation, including water supply and system acceptance. Each subsequent edition of the Standard reflects new research, advanced equipment, and changes in the built environment.
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NFPA®'s Redline PDF contains both the current NFPA document and a Redline version of the document which shows changes from the previous edition marked in color. With the Redline you can quickly spot changed sections and tell specifically what has been changed from the previous edition, saving time and confusion.
Sample (NEC® 2014)
411.2411.3 Definition. Low-Voltage Lighting Systems.
(A) General. Lighting Ssystems Ooperating at 30 Volts- volts or Less. A lighting system consisting less shall consist of an isolating power supply, the low-voltage luminaires, and associated equipment that are all identified for the use. The output circuits of the power supply are shall be rated for not more than 25 amperes and operate at 30 volts (42.4 volts peak) or lessmaximum under all load conditions.
(B) Class 2. Listed Class 2 lighting equipment shall be rated in conformance with Chapter 9, Table 11(A) or Table 11(B).
411.3411.4 Listing Required. Lighting systems operating at 30 volts or less shall comply with 411.3(A)411.4(A) or
411.3(B).411.4(B). Class 2 power sources and lighting equipment connected to Class 2 power sources shall be llisted.