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C . Coating : Unless otherwise specified , the exterior of the pipe shall <br /> have a bituminous coating to a minimum dry film thickness of 1 . 0 <br /> mil . <br /> D . Lininq Inspection : <br /> 1 . All ductile iron pipe and fitting linings shall be checked for <br /> thickness using a magnetic film thickness gauge . The <br /> thickness testing shall be done using the method outlined <br /> SSPC- PA-2 film thickness rating . <br /> 2 . The interior lining of all pipe and fittings shall be tested for <br /> pinholes with a nondestructive 2 , 500-volt test. <br /> 3 . Each pipe joint and fitting shall be marked with the date of <br /> application of the lining system and with its numerical <br /> sequence of application on that date . <br /> E . Certification of Lininq Inspection : The pipe or fitting manufacturer <br /> must supply a certificate attesting to the fact that the applicator <br /> met the requirements of this specification , and that the material <br /> used was as specified , and that the material was applied as <br /> required by the specification . <br /> F . Repair: Anywhere that the coating is removed purposely or <br /> accidentally , the area shall be cleaned of any rust, grease , and dirt <br /> and re-coated to a minimum dry film as specified for the individual <br /> piece . <br /> G . Encasement: If and when directed by IRCDUS 's Engineer, a <br /> polyethylene encasement shall be provided around pipe , fittings , <br /> and valves . The material , installation , and workmanship shall <br /> conform to applicable sections of AWWA Standard Specifications <br /> C105/A21 . 5-99 , or latest revision . Installation methods A or B <br /> shall be employed using flat tube polyethylene . The Contractor <br /> shall make provisions to keep the polyethylene from direct <br /> exposure to sunlight prior to installation . Backfilling following <br /> installation shall be completed without delay to avoid exposure to <br /> sunlight. <br /> H . All exposed ductile iron pipes shall be painted green per <br /> Approved Manufacturer' s Product List . <br /> 6 . 06 BELL AND SPIGOT CONNECTIONS <br /> Joints in bell and spigot pipe shall be push -on , mechanical , or restrained <br /> joints in accordance with AWWA Standard Specifications C111 /A21 . 11 - <br /> 00 , or latest revision . Pipe restraints shall also be in accordance with <br /> IRCDUS Standards or as directed by IRCDUS ' s Engineer. <br /> 6 - 3 <br />