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20.08.049 <br />wood. Note: No ferrous (black iron, <br />iron or galvanized) pipe is permitted. <br />Fire sprinkler riser check valves shall <br />be approved by the City and Fire <br />Prevention Bureau. <br />CHAPTER 3-System Components - <br />amended <br />Section 3-1.1 Valves and Drains is <br />amended: <br />Section 3-l.l Exception No. 1 (a) <br />amended to read: <br />(a) To a Underwriters Laboratory <br />(UL) listed Central Station Service. <br />Delete (b) and (c). <br />Section 3-3 Piping is amended: <br />Section 3-3 is amended to delete all <br />references to ferrous metal pipe. Fer- <br />rous metal pipe is not permitted. <br />Section 3-6 Alarms is amended to <br />read: <br />Local water flow alarms shall be <br />provided on all sprinkler systems. <br />Water flow alarms and valve tamper <br />shall be connected to an Underwrit- <br />ers Laboratory (UL) listed Central <br />Station Service under the following <br />conditions: <br />(a) All buildings with eight (8) or <br />more units or, <br />(b) When there are four (4) or more <br />buildings per complex or, <br />(c) When there are more than sixty- <br />four (64) units per complex. <br />CHAPTER 4-System Design - <br />amended <br />Section 4-1.2.1. Number of Design <br />Sprinklers and Water Demand is <br />amended to read: <br />The number of design sprinklers <br />shall be as follows: <br />(a) Standard for One (1) to Four (4) <br />Dwelling Units. <br />The number of design sprinklers <br />shall include all sprinklers within a <br />compartment to a maximum of four <br />(4) sprinklers. When the number of <br />design sprinklers is less than four (4) <br />for a compartment, the design shall <br />include a five (5) gallon per minute <br />domestic use simultaneous with <br />sprinkler flow per unit. This domes- <br />tic use shall be calculated at the base <br />of riser. <br />Pilot sprinklers shall be provided in <br />the attic and between floors where <br />floor/ceiling assemblies consist of <br />open web wood joists or trusses. <br />Pilot sprinklers shall be 212 degree <br />F, '/16 inch orifice. Pilot sprinklers <br />shall be located at maximum 30 feet <br />centers (Maximum 15 feet from <br />outside walls) and shall be located at <br />all heat and fire sources including <br />furnaces, hot water heaters, above <br />kitchen ranges, etc. Fire sprinklers in <br />garages shall be 200 degree F, quick <br />(Pleasanton April 2001) ']~Q_( <br />