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d. In general, at least one test for maximum dry density/optimum <br /> moisture content shall be performed on a representative sample of <br /> each inherently different material to be used for compacted backfill <br /> or embankment fill . For material of uniform composition and <br /> textural class , a minimum of two test locations per mainline run <br /> between manholes shall be performed. <br /> e. As a minimum, in-place density tests shall be performed at the rate <br /> of on the compacted backfill and shall be taken in one foot <br /> intervals beginning at one foot above the pipe and ending at the <br /> final grade . Test locations shall be as directed by the Engineer <br /> or his authorized representative . If any test results are <br /> unsatisfactory, the Contractor shall re-excavate and recompact <br /> the backfill, at his expense, to the extent directed by the <br /> Engineer until the required compaction is obtained . <br /> f. The costs of all sampling, proctor and density testing shall be paid for <br /> by the Contractor. <br /> H. Pine System La ing and Jointing <br /> 1 ) General <br /> a, Unless otherwise specified herein or directed by the Engineer, all <br /> pipe and fittings shall be laid and joined in accordance with the <br /> appropriate manufacturer's directions with regard to allowable barrel <br /> and joint deflection, spigot seating depth, gasket placement, <br /> lubrication, bolt torque, field cutting/trimming, and <br /> pushing/pulling methods for joint assembly . <br /> b . Prior to placing in the trench, each pipe section, joint, and <br /> fitting shall be checked for damage or defects such as cracks , <br /> blisters , coating/lining separation, gouges, and the like . Any <br /> damage or defective materials found shall not be installed unless <br /> approved by the Engineer, and shall be marked " REJECTED " <br /> and immediately removed from the work site . <br /> C , Prior to installation, the interior of all pipe and fittings shall be <br /> inspected for debris, sediment accumulation, sand, and the like, <br /> and shall be cleaned as required to remove such foreign matter. <br /> Joint surfaces such as gaskets, gasket grooves , spigots, and bells <br /> shall be cleaned of sand and grit prior to joining . <br /> d . Gasket lubricants shall be stored and applied in a manner that will <br /> prevent significant contamination or pick-up of sand and grit. <br /> CADown1oad\techspec-0260Ldoc SC601 -9 <br />