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3 . Prior to installation, the interior of all pipe and fittings shall be <br /> inspected for debris , sediment accumulation, sand, and the like, and shall <br /> be cleaned as required to remove such foreign matter. Joint surfaces <br /> such as gaskets , gasket grooves, spigots, and bells shall be cleaned of <br /> sand and grit prior to joining. <br /> 4 . Gasket lubricants shall be stored and applied in a manner that will <br /> prevent significant contamination or pick-up of sand and grit. <br /> 5 . The pipe spigot shall be centered in and aligned with its mating bell prior <br /> to insertion and forced evenly in a straight line to seating depth, taking care <br /> not to over-bell the joint. Where required, deflections shall be made after the <br /> joint is seated . <br /> 6 . Joining shall generally be done by hand or by push-bar with a cushion <br /> block whenever pipe size and weight permit. When a mechanical <br /> pushing/pulling device such as chain-puller, come-along, and the like is <br /> required, the device shall be used in a manner that will not deform <br /> gouge, chip, or otherwise damage the pipe or cause significant <br /> disturbance of the prepared bedding . In no case shall joints be made by <br /> it or swinging the spigot into the bell to seat the joint. <br /> 7 . Fittings and appurtenances shall be fully, independently supported on the <br /> bedding or on a permanent foundation so as not to bear on the pipe upon <br /> completion of the installation. <br /> 8 . The installed piping system shall be kept free of dirt, trench water, and other <br /> foreign matter during the progress of the work, and all open ends of the line <br /> shall be sealed with watertight plugs whenever work is not in progress . <br /> 9 . Empty installed pipe shall be secured against flotation due to potential trench <br /> flooding by timely placement of sufficient backfill or approved anchoring <br /> devices sufficient to resist pipe buoyancy. <br /> 10 . INSTALLATION OF FITTINGS <br /> A. Fittings , plugs , and caps shall be set and jointed to pipe in the manner <br /> heretofore specified for cleaning, laying and jointing pipe . <br /> 11 . INSTALLATION OF DRAINAGE STRUCTURES <br /> A. Excavation for drainage structures shall be of sufficient size to permit <br /> construction of the structure to progress without hindrance from the - walls of the <br /> excavation or from sloughed materials . No less than 12 inches clearance shall be <br /> provided between excavation walls and walls of the structure . If soil conditions <br /> encountered at the bottom of the excavation would in the sole opinion of the <br /> Engineer be unsuitable for foundation, the Contractor shall remove and dispose <br /> of the unsuitable material to the depth where suitable bearing can be obtained . <br /> C : \ Down1oad \ techspec - 02403 . doc 02403 - 8 <br />