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11/25/2019 divided into a maximum of 1,000 square foot fire areas by one -hour rated fire barriers. Flow from all fire sprinkler heads, upright, pendant, and sidewall, at all levels, located in the design area of application, shall be included in the hydraulic calculations for the fire sprinkler system. Car stackers and car puzzler systems installed inside structures or under attached canopies shall be provided with Manual Wet or Automatic Wet Standpipe connections at all points of access and at each parking level within the structure so that every part of the parking area is within 150 feet by hose pull of a standpipe connection. Car stackers and car puzzler systems installed inside structures shall be provided with a mechanical smoke and heat removal system as per Section 910.4 of the California Fire Code. The smoke and heat removal system shall be automatically activated upon detection of fire by the fire alarm system. Section 910.4.4 is not applicable to this requirement. Car stacker and car puzzler systems installed outside structures that are open to the environment shall be configured so as to limit fire spread from one vehicle to another and from vehicles to adjacent structures. This shall be accomplished with one -hour fire rated barriers creating a maximum of 2500 square foot fire areas between stackers or puzzlers and by providing adequate setback from adjacent structures. Sec. 12.16. - SECTION 507.1.1 ADDED: Section 507.1.1 is hereby added to the Fire Code to read as follows: 507.1.1. - Fire Main, Hydrant Specifications. Notwithstanding anything to the contrary contained in this Code, all water mains providing a water supply for fire protection, both to fire hydrants and to fire service systems, shall be not less than eight inches (8 ") in diameter (inside measurement) provided, however, the fire code official may require different sizes based on the conditions of the site, but in no case shall the fire service main be less than six inches (6 ") in diameter (inside measurement). Maintenance of privately - owned water mains, fire hydrants, or other fire service systems (collectively referred to as 'Facilities') shall be performed by, and be the responsibility of, the owners thereof, and the City shall assume no liability for damages to the Facilities in performing tests to, or in using, such Facilities. Appendix Table B105.1 (1) is not adopted under this ordinance. Minimum fire flow for one and two family dwellings shall be 1000 gallons of water per minute with two -hour flow duration. Residual pressure shall not be less than 20 psi. Appendix Table 13105.2 is amended to allow a maximum reduction in required fire flow of 50% of the value in Table B105.1 (2) with a minimum fire flow of 1500 gallons per minute at 20 pounds per square inch residual pressure for buildings other than one and two family residential dwellings with automatic fire sprinklers installed per Sections 903.3.1.1 or 903.3.1.2 of the California Fire Code. Sec. 12.16.1. - SECTION 507.5.1.1 AMENDED: Section 507.5.1.1 of the Fire Code is hereby amended to read as follows: ATTY /ORD.501 /CC ORDINANCE FIRE CODE ADOPTION 2019 ORDINANCE NO. 2469 REV: 11 -19 -19 RL MUFF NO. 305 Page 5 of 12