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630-3.2 Conduit Sizes: Size the conduit to be used on all installations, unless otherwise shown in the Contract Documents. Use conduit of sufficient size to allow the conductor to be installed without any damage and meeting NEC requirements . Use conduit that is at least 1 inch a. in diameter, except for the conduit protecting the ground wire on the side of a pole, use conduit that is at least 1 /2 inch in diameter. 630-3.3 Conduit Joints: Make conduit joints using materials as specified by the • manufacturer. As an exception to the threaded coupling for intermediate metal conduit, at locations where it is not possible to screw the threaded coupling properly, the Contractor may use a waterproof slip-joint coupling approved by the Engineer. Secure the joint, and tighten threaded connections. Prior to insertion into the coupling, clean, prime and coat the ends of PVC conduit with a solvent-type cement as specified by the manufacturer. 630-3.4 PVC Coating: Apply the PVC coating to the entire surface of the conduit, except for the threads, to attain a nominal thickness of 40 mils. Ensure that the coating is free of sags and/or drips. Ensure that the bond between the PVC coating and the conduit is greater than the tensile strength of the PVC coating. Attach the coupling to the conduit prior to the application of the coating for conduit of 1 inch diameter or less. Use a coupling with sleeve extensions on conduit larger than 1 inch. Ensure that the sleeve extensions on all threaded female openings have a length equal to the diameter of the conduit up to and including size number 53 . 630-3.5 Conduit Terminations : Fit the terminating ends of all metal conduit and metal conduit sleeves with an appropriate bushing. For conduit to be encased in concrete, wrap with tape or otherwise protect all terminations to prevent the entrance of concrete. Connect new underground conduit(s) to existing underground conduit(s) with a ,r pull box. Install conduit terminating in a concrete strain pole through the cable entry hole and up the center of the pole to a location approximately 6 inches below the handhole. r Seal conduits terminating in a controller base, pole, pull box, junction box, or pedestal base with Appleton Duct Seal, Permagum Duct Seal, GB Duct Seal, or an equivalent moisture resistant sealant approved by the Engineer. +� For a controller base, pole or pedestal base, and junction boxes, terminate conduit runs into the center of the base or box at least 2 inches above the surface of the base. 630-3.6 Existing Underground Facilities: Coordinate with any potential conflicting underground utilities prior to starting all excavating or jacking operations at the project site. 630-3.7 Restoration of Trench Areas: Restore the conduit trench construction area to an acceptable condition. Such work includes replacement of all pavement areas, sidewalks, curbs, structures, or grass areas disturbed by the conduit trench. 630-3.8 Jacking Conduit: Use either intermediate metal conduit or rigid galvanized conduit as the sleeve when installation of a conduit requires jacking under paved surfaces, railroads, etc., with either polyvinyl chloride or fiberglass reinforced epoxy conduit installed in the jacked sleeve. Do not disturb any pavement without the approval of the Engineer. 630-3.9 Above-Ground Installation: Securely attach above-ground conduit installations to the surface of the supporting structure using conduit straps. As a minimum, use conduit straps located on 5 feet centers. Use galvanized metal conduit straps when installing intermediate metal r