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SECTION 5 – WATER WORKS <br />76 <br />5-2.7 METER AND METER PIT <br />Meters are required for all domestic and irrigation lines. Irrigation may be fed off of the domestic <br />service after the meter; however, sewer and water charges will apply for all metered use. Fire service <br />lines are not metered and are billed a flat monthly rate. Meter, meter pit, and vault shall be as shown <br />on Standard Drawings 5-13 and 5-14. <br />5-2.8 BACKFLOW ASSEMBLY <br />A cross connection control program was established by local ordinance 8356-93 in support of 327 <br />IAC. The type of backflow preventer shall be determined by a water works field inspector. For <br />commercial and industrial customers, a Reduced Pressure Zone (RPZ) is required for domestic service, <br />double check is required for fire lines, and a pressure vacuum breaker (or RPZ) is required for irrigation <br />systems. For further information contact the City of South Bend Water Works Cross Connection <br />Control Department at (574) 235-7605. <br />5-2.9 STEEL CASING PIPE <br />Steel casing pipe shall conform to ASTM A139, Grade B. The minimum wall thickness shall be 0.375 <br />inches for casing pipe diameter up to and including twenty-six (26) inches, minimum wall thickness <br />shall be 0.50 inches for casing pipe diameters between twenty-seven (27) inches and forty-two (42) <br />inches, and minimum wall thickness shall be 0.5625 inches for casing pipe diameters between forty- <br />three (43) and forty-eight (48) inches. Casing spacers shall be stainless steel. The steel casing pipe <br />and casing spacers shall comply with Standard Drawing 5-5. <br />5-3 CONSTRUCTION METHODS <br />5-3.1 GENERAL <br />Schedule and coordinate work with the City Water Department. <br />All pipe installations are subject to inspection by the Project Representative and civil authorities having <br />jurisdiction. <br />5-3.2 EXCAVATION <br />Refer to Section 4-3.3 for excavation, sheeting/shoring, and trenching requirements. <br />5-3.3 DEWATERING <br />Refer to Section 4-3.4 for dewatering requirements. <br />Water shall be kept out of the trench until pipe joining is completed. When work is not in progress, <br />open ends, pipe, fittings, and valves shall be securely closed so that no trench water, earth, or other <br />substance will enter the pipes or fittings.