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Hubs for threaded attachment of steel conduit to sheet metal enclosures, where required, shall be similar to Appleton Type HUB, equivalent types such as manufactured by T & B, Efcor, Myers Scrutite, or approved equal. G. Transition fittings to mate steel to PVC conduit, and PVC access fitting, shall be as - - - furnished or recommended by the manufacturer of the PVC conduit. H. Sealing fittings are required in conduit runs entering corrosive areas and elsewhere as shown. Sealing fittings shall be Appleton Type EYS, O -Z Type FSK, or approved equal. Sealing compound shall not be poured in place until electrical installation has been otherwise accepted. Expansion fittings shall be installed wherever a raceway crosses a structural expansion joint. Such fittings shall be expansion and deflection type and shall accommodate lateral and transverse movement. Fittings shall be O- Z/Gedney Type "DX," Crouse Hinds "XD," or approved equal. These fittings are required in metallic and non - metallic raceway installations. When the installation is in a non - metallic run, a 3 -ft length of rigid conduit shall be used to connect the non - metallic conduit to the fitting. PART 3 - EXECUTION 3.1 INSTALLATION A. UNDERGROUND DUCTS General: Where an underground distribution system is required, it shall be comprised of multiple runs of single bore non - metallic ducts, concrete encased, with steel reinforcing bars. When non - metallic ducts are required, they shall be rigid Schedule 40 PVC for concrete encasement. Trenching and patching shall be performed by the CONTRACTOR. The original surface shall be repaired similar to its original condition. 3.2 RACEWAYS A. General: Raceways shall be installed as shown, however, conduit routings shown are diagrammatic. Raceway systems shall be electrically and mechanically complete before conductors are installed. Bends and offsets shall be smooth and symmetrical, and shall be accomplished with tools designed for the purpose intended. Factory elbows shall be used for all 3/4 -inch conduit. Bends in larger sizes of metallic conduit shall be accomplished by field bending or by the use of factory elbows. All installations shall be in accordance with the latest edition of the National Electrical Code. B. Raceways shall be installed in accordance with the following schedule: 1. Low Voltage Raceway (control, power, and data hi -way and communications): a. Rigid Schedule 40 PVC shall be used for concrete encased duct on earth. b. PVC - coated galvanized rigid steel raceways shall be used on exposed locations in corrosive areas. Conduit City of Santa Ana Page 16111 -4 Security Management System Project SantaAna_SMS_16111