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SECTION 4 – SANITARY <br />67 <br />4-4.2 SEWER SYSTEM QUALITY ASSURANCE <br />4-4.2 (a) TESTING REQUIREMENTS <br />1.) Examine each piece of pipe before installing. Remove all defective material from the site . <br />Ductile iron pipe is to be rung with a light hammer to detect cracks. <br />2.) A South Bend City Engineering representative must witness all tests. The South Bend City <br />Engineer requires three (3) working days prior notice before any test. The sewer pipes must be <br />ready for testing at the time specified. During the inspection process, if any material needs to <br />be replaced, the test must be performed again to include the new material. <br />3.) Prior to performing a sanitary sewer system test, the Contractor shall do the following: Record <br />drawings must be on file at the South Bend City Engineer office at least three (3) working days <br />prior to the sewer test. These drawings must include all sewer and force main pipe, service <br />laterals, and structures. Proper documentation shall be provided on official letterhead including <br />a detailed list of materials, sizes, and total lengths installed. The City Engineer office is located <br />at 227 W. Jefferson Boulevard, Suite 1300 N and the phone number is (574) 235-9251. <br />4-4.2 (b) GRAVITY SEWER LEAKAGE TEST <br />1.) PVC Pipe shall be tested for infiltration or exfiltration by either a hydrostatic test or an air test. <br />A hydrostatic test shall be performed with a minimum of two (2) feet of po sitive head. The <br />rate of exfiltration or infiltration shall not exceed 100 gallons per inch of pipe diameter per <br />linear mile per day for any section in the sewer system. An air test shall conform to ASTM <br />F1417 Standard Test Method for Installation Acceptance of Plastic Gravity Sewer Lines Using <br />Low-Pressure for plastic pipe. <br />2.) VCP Pipe shall be tested for infiltration or exfiltration by either a hydrostatic test or an air test. <br />Low pressure air test shall conform to ASTM C-828. Hydrostatic infiltration and exfiltration <br />test shall conform to ASTM C-1091. <br />4-4.2 (c) MANDREL DEFLECTION TEST <br />1.) A five percent (5%) Mandrel Deflection Test shall be performed on all PVC gravity sanitary <br />sewer pipe. <br />2.) These pipes shall be mandrelled with a ridge device sized to pass five percent (5%) or less <br />deflection (or deformation) of the base inside diameter of the pipe. The mandrel test shall be <br />conducted no earlier than thirty (30) calendar days after reaching final trench backfill grade. <br />Each pipe material/type required to be mandrel tested shall be tested with a mandrel approved <br />by the pipe manufacturer and meeting the requirements of this section. The test shall not be <br />performed with the aid of a mechanical pulling device. <br />3.) The mandrel shall be pulled by hand through all sewer lines in a manner acceptable to the City <br />and any section of sewer not passing the mandrel shall be uncovered, replaced, or repaired to <br />the City’s satisfaction and retested.