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Section 903.2.7 Group R of the California Building Standards Code 2007 Edition (24 C.C.R.), and including by reference the International Building Code, 2006 Edition, Volumes 1 and 2, is amended to read as follows: 903.2.7 Installation of Fire Sprinklers in Residential Occupancies. The installation of fire sprinkler systems in Grope R buildings up to fifteen (15) units and up to a maximum of twelve thousand (12,000) square feet maximum shall be accomplished using the National Fire Protection Association (NFPA) 13D-2005 Edition as may be herewith amended. Chapter 1-General Information. Section 1-1 Scope: This standard describes the requirements for the mechanical and performance properties of the sprinkler itself. It also describes the requirements for the installation of the complete sprinkler system for residential occupancies up to fifteen (15) units or twelve thousand square feet (12,000) maximum. Chapter 1-General Information -amended Section 1-5.4 is amended to read: Section 1-5.4 All systems shall be tested for leakage at 200 psi for one (1) hours mininum. Chapter 1-General Information -added Section 1-5.6 is added to read: Section 1-5.6 All sprinkler piping shall be either non-ferrous metallic pipe (copper, or brass) or CPVC. All piping above the flow switch should be protected by sheet rock or plywood. Note: No ferrous (black iron, iron or galvanized) pipe is permitted. Fire sprinkler riser check valves shall be approved by the City and Fire Prevention Bureau. CHAPTER 3-System Components -amended Section 3-1.1 Valves and Drains is amended: Section 3-1.1 Exception No. 1 (a) amended to read: (a) To a Underwriters Laboratory (UL) listed Central Station Service. (b) Delete (b) and (c). CHAPTER 3--System Components -amended: 43