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encasement and concealment temporary conduit labels shall be placed at <br /> each exposed end. <br /> C. Galvanized Rigid Steel Conduit (GRS) <br /> 1. Rigid steel conduit, couplings, bends and nipples shall be in accordance with <br /> ANSI C80.1 and UL-6. <br /> 2. Hotdip galvanized inside and outside after fabrication and then coated with a <br /> zinc bichromate finish. <br /> 3. Minimum trade size - three-quarters inch (3/4") unless otherwise shown on <br /> Contract Drawings. <br /> 4. Galvanized rigid steel factory elbows for indoor 90 degree transitions. -- <br /> 5. EMT or IMC is not considered an equivalent to GRS. <br /> 6. GRS conduit is allowed only when specifically called out in the "Conduit and - <br /> Wire Routing Schedule". <br /> D. Galvanized Rigid Steel Conduit - PVC Coated (GRS-PVC) <br /> 1. Standard weight, galvanized conduit with a 40-mil thick polyvinylchloride <br /> coating bonded to both the outside and urethane interior coating. Conduit <br /> shall be hot-dip galvanized conforming to NEMA RN 1. GRS-PVC conduit to _ <br /> be Robroy Plasti-bond Red, Perma-Cote, or approved equal. <br /> 2. Provide PVC coated galvanized rigid steel factory elbows for 90 degree <br /> transitions. <br /> 3. Fittings shall be hot dipped galvanized steel or galvanized cast ferrous metal <br /> with a PVC 40 mils thick coating. Provide threaded-type fittings,couplings, and — <br /> connectors; set-screw type and compression-type are not acceptable. Fittings <br /> shall be Robroy Liquitite coated fittings or approved equal. <br /> 4. All junction boxes shall be galvanized with exterior surfaces PVC coated to 40 _ <br /> mils thickness except where stainless steel boxes are called out. <br /> 5. Conduits entering enclosures shall be fitted with insulated grounding bushing; <br /> O-Z HBLG ,Appleton"GIB",or approved equal.All grounding bushings shall <br /> be tied to the grounding system with properly sized bonding conductors per the <br /> NEC code. <br /> 6. Support channel and pipe straps shall be PVC coated. Exposed metal/nuts, <br /> all-thread rod shall be 316 stainless steel. <br /> 7. PVC coating patching material shall be as provided by the manufacturer. _ <br /> E. PVC Conduit (PVC-40 OR PVC-80) <br /> 1. Shall be high impact polyvinylchloride suitable for use underground, direct _ <br /> burial and for use with 90 C wires, and shall conform to UL 651. PVC conduits <br /> shall be UL listed and labeled for"direct" burial. <br /> 2. A copper bonding conductor shall be pulled in each raceway and bonded to - <br /> equipment at each end with approved lugs. <br /> Division III-195 NEI Phase II Water and Sewer <br /> July 2007 CIP Nos.7468, 7589, 7590 <br />