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CITY OF SANTA ANA <br />SPECIFICATIONS <br />PROJECT NO. 11 -6416 <br />SEVENTEENTH STREET WATER MAIN IMPROVEMENTS <br />d. The face of the excavation shall be protected from the collapse of the soil into the pipe <br />or casing. <br />e. Design of the jacking /receiving pit and required bearing loads to resist jacking forces <br />are the responsibility of the contractor. The excavation method selected shall be <br />compatible with expected ground conditions. The lengths of the bore shown on the <br />contract documents are not representative of required boring. It is the contractors <br />responsibility to develop working drawings detailing the bore and jack process. <br />f. Contractor shall comply with all manufacturers' specifications and recommendations <br />for the approved products <br />CASING <br />Submit manufacturer's mill specification sheet listing diameter, thickness, and class of steel <br />used in making the casing, and the mill certification. <br />The Contractor's attention is called to the fact that the casing pipe must be installed such <br />that the carrier pipe grade line matches surrounding proposed PVC water main. Tolerances <br />shall not exceed allowable deflections stipulated in manufacturer's specifications. <br />Casing pipe shall not be dropped in the trench. <br />Steel casing shall be ASTM A 283, Grade C, ASTM A 570 Grade 30, 33, and ASTM A -36 <br />unless noted otherwise and have a minimum yield strength of 35,000 psi. The minimum <br />size and thickness of casing pipe shall be per City of Santa Ana Standard Plan No. 1429. <br />Greater casing thickness and diameter may be used as convenient for the method of work <br />and loadings involved, as suitable for the site and as limited by possible interferences, but <br />at no additional cost to the City. The exterior of the pipe shall be coated with coal tar <br />epoxy or bituminous asphalt. Minimum wall thickness shall be as shown on City of Santa <br />Ana Standard Plan No. 1429. <br />Casing sections shall be joined by full circumference butt welding in the field. Prepare ends <br />of casings for welding by providing 1/4 -inch X 45- degree chamfer on outside edges. <br />The pipe shall be supported on plastic skids, PSI spacers Model C8G -2, or approved equal, <br />installed at the spacing recommended by the manufacturer. Each end of casing shall be <br />sealed with a water tight flexible sealer, PSI Model C "End Seal" or approved equal. <br />CARRIER PIPE <br />The carrier pipe shall be PVC unless otherwise indicated on plans. All pressure carrier pipe <br />shall have restrained joints inside the casing. <br />T -3k <br />23A -106 <br />