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(Added by Ord. No. 185,198, Eff. 11/22/17.)
The standards of this Division 20 provide the minimum requirements for the design and installation of automatic fire protection systems. The design of all fire protection systems shall be in conformity with accepted engineering practices and the provisions of the LAMC.
Automatic fire sprinkler systems shall be installed in locations required by the Los Angeles Building Code, and all fire sprinkler systems shall be in conformance with the approved plans and the LAMC.
(Amended by Ord. No. 187,719, Eff. 1/23/23.)
Chapter 35 of the 2022 California Building Code to the extent it adopts and amends NFPA 13 is adopted by reference and the following Subsections are added to read as follows:
3.3.243. Water Curtain is a line of closely spaced fire sprinklers (or a single sprinkler) aligned adjacent to openings to keep fire from penetrating those openings.
9.3.5.5. Water curtains shall consist of closely spaced sprinklers and draft stops that are made of noncombustible or limited combustible material. The draft stops shall be located immediately adjacent to the opening and shall be at least 18 inches (47.2 mm) deep measured from the sprinkler deflector to the bottom of the draft stop and shall be of noncombustible or limited-combustible material. Sprinklers shall be spaced not more than 6 feet (1929.8 mm) apart and placed 6 to 12 inches (152.4 mm to 304.8 mm) from the draft stop on the side away from the opening. Where sprinklers are closer than 6 feet (1828.8 mm), cross baffles shall be provided in accordance with NFPA 13 Section 10.2.5.4.2.
Locations. Floor control valves shall be within a stairway enclosure or within the vestibule or on the access balcony of a smoke proof enclosure.
EXCEPTIONS:
1. In buildings with three or fewer stories or where there is no stairway that serves a floor, control valves may be located elsewhere on the floor level.
2. Unenclosed stairways in parking garages.
19.3.3.6. Water curtains shall be hydraulically calculated in accordance with NFPA 13 Section 19.3.
(Amended by Ord. No. 187,719, Eff. 1/23/23.)
Chapter 35 of the 2022 California Building Code to the extent it adopts and amends NFPA 13R is adopted by reference and LAMC Subsection 94.2013.1 is added to read as follows:
(Amended by Ord. No. 187,719, Eff. 1/23/23.)
Chapter 35 of the 2022 California Building Code to the extent it adopts and amends NFPA 13D is adopted by reference and LAMC Subsection 94.2014.1 is added to read as follows:
(Amended by Ord. No. 187,719, Eff. 1/23/23.)
Chapter 35 of the 2022 California Building Code to the extent it adopts and amends NFPA 20 is adopted by reference and the following Los Angeles Municipal Code subsections are added to read as follows:
6.4.5.3.1. Where the Fire Department inlet connection does not serve the entire building, the portion served shall be suitably identified.
9.1.5. Water supplies from the following sources shall be permitted:
1. A public waterworks system where pressure and flow rate are adequate;
2. Automatic fire pumps connected to an approved water source in accordance with NFPA 20, Standard for the Installation of Stationary Pumps for Fire Protection.
94.2020.4.1. Test Required. When required by the Fire Department, 2 1/2 inch (63.5 mm) pressure regulator hose valves installed on standpipe outlets shall be tested for proper operation at a flow of 300 g.p.m. with a minimum residual pressure of 125 psi in the presence of a representative of the Fire Department.
94.2020.4.4. Drain. The test openings shall drain to a minimum 3 inch (76.2 mm) drain line constructed and installed as required for fire sprinkler drains. The drains shall not discharge where they may cause damage. Where available, drains shall terminate to the fire water storage tank. When test openings are located below tank elevation alternate means for testing and drainage shall be provided as needed.
11.2.3. Flushing the System Riser. Water shall flow from the topmost outlet of each riser until the system is clear of debris.
11.2.3.1. Roof Outlets. Standpipe risers going through the last floor of the building, through a floor under a roof, or adjacent to a roof shall be designed so that they can be flushed through outlets located on roof.
11.2.3.2. Flow. All standpipes shall be flushed individually through the roof, or in the absence of roof outlets, through the topmost outlet at a residual pressure of at least 65 psi. The flow for Class I and Class III standpipes shall be at least 500 g.p.m through each riser.
(Amended by Ord. No. 187,719, Eff. 1/23/23.)
3.16.11. Fire Department Connections. Fire Department connections shall not be connected to on suction side of the pump.
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