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for gable roofs) and over all furnaces, water heaters, etc. All attic areas over 100 <br />square feet shall be covered (some houses have several attic areas). Attics with flat <br />roofs shall have sprinklers spaced a maximum of 30' on center and a maximum of 15' <br />from the walls. Attic sprinklers shall be 200° - 212° (degree) F, quick response or <br />standard response, 7/16" orifice (K=4.0 to 4.5). <br />4. Fire sprinklers shall be provided between floors where floor ceiling assemblies <br />consist of open web joists or trusses. Sprinklers shall be spaced a maximum of 30' on <br />center and a maximum of 15' from walls. Sprinklers shall be 200° - 212° (degree) F, <br />quick response or standard response, 7/16" orifice (K=4.0 to 4.5). <br />5. Fire sprinklers shall be provided in the garage. Fire sprinklers in garages shall be <br />200° (degree) F, quick response type, 7/16" orifice (K = 4.0 to 4.5) with a maximum <br />spacing of 140-150 square feet per sprinkler. <br />6. Pipe type. UL approved plastic pipe shall be protected per the listing except that <br />piping to the fire sprinklers in the attic and pipe in the concealed spaces between floors <br />may be exposed within the space. <br />This guideline does not apply to motels, hotels, or day care centers with more than 12 <br />occupants. These types of buildings shall have fire sprinklers designed and installed <br />per NFPA 13. <br />Chapter 4-General Requirements -amended <br />Section 4.3.1 is amended to read: <br />Section 4.3.1 All systems shall be tested for leakage at 200 psi for two (2) hours <br />minimum. Exception: Minor additions to an existing house may be tested at street <br />pressure. Where additional pressure testing is needed for existing systems the <br />pressure shall be 50 psi over street pressure for a minimum of 2 hours. <br />Chapter 5-System Components -added <br />Section 5.2.1.4 is added to read: <br />Section 5.2.1.4 All sprinkler riser piping shall be either non-ferrous metallic pipe <br />(copper, or brass) or CPVC. All piping above the flow switch shall be protected by sheet <br />rock or plywood. Note: No ferrous (black iron, iron or galvanized) pipe is permitted. Fire <br />sprinkler riser check valves shall be approved by the City and Fire Prevention Bureau. <br />Chapter 7-Installation <br />Section 7.1 Valves is amended: <br />Section 7.1.2 (1) amended to read: <br />(1) To a Underwriters Laboratory (UL) listed Central Station Service <br />Sections 7.1.2 (2) and (3) are deleted. <br />8s <br />