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Ordinance No. NS-XXX <br />Page 31 of 38 <br />closer than 40 ft (12 m) but at least as far from the building as the <br />height of the wall facing the backflow preventer. <br /> <br />(5) Control valves installed in a fire-rated room accessible from the exterior <br /> <br />(6) Control valves in a fire-rated stair enclosure accessible from the exterior <br /> <br />(3) Section 10.1.5 is hereby added as follows: <br /> <br />10.1.5 All ferrous pipe and joints shall be polyethylene encased per AWWA C150, <br />Method A, B, or C. All fittings shall be protected with a loose 8-mil polyethylene <br />tube or sheet. The ends of the tube or sheet shall extend past the joint by a <br />minimum of 12 inches and be sealed with 2-inch-wide tape approved for <br />underground use. Galvanizing does not meet the requirements of this section. <br /> <br /> Exception: 304 or 316 Stainless Steel pipe and fittings <br /> <br />(4) Section 10.4.1.1 is hereby revised as follows: <br /> <br />10.4.1.1 All bolted joint accessories shall be cleaned and thoroughly coated with <br />asphalt or other corrosion-retarding material after installation. <br /> <br />Exception: Bolted joint accessories made from 304 or 316 stainless steel. <br /> <br />(5) Section 10.4.1.1.1 is hereby added as follows: <br /> <br />10.4.1.1.1 All bolts used in pipe-joint assembly shall be 316 stainless steel. <br /> <br />(6) Section 10.4.3.2 is hereby added as follows: <br /> <br />10.4.3.2. Where fire service mains enter the building adjacent to the foundation, <br />the pipe may run under a building to a maximum of 24 inches, as measured from <br />the interior face of the exterior wall to the center of the vertical pipe. The pipe <br />under the building or building foundation shall be 304 or 316 stainless steel and <br />shall not contain mechanical joints or it shall comply with 10.4.3.2.1 through <br />10.4.3.2.4. <br /> <br />(a) NFPA 13, 2016 Edition, Standard for the Installation of Sprinkler <br />Systems is hereby amended as follows: <br />(1) Section 6.7.3 is hereby amended as follows: <br /> <br />6.7.3 Fire department connections (FDC) shall be of an approved type. The <br />location shall be approved and be no more than 150 feet from a public <br />hydrant. The FDC may be located within 150 feet of a private fire hydrant <br />when approved by the fire code official. The size of piping and the number <br />of 2½” inlets shall be approved by the fire code official. If acceptable to the