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City of Everett 26 05 43 -4 <br /> Inductive Charging Infrastructure for Everett Transit <br /> 2.4 DUCT ACCESSORIES <br /> A. Duct Spacers: Factory-fabricated, rigid, PVC interlocking spacers; sized for type and <br /> size of duct with which used, and selected to provide minimum duct spacing indicated <br /> while supporting duct during concreting or backfilling. <br /> 2.5 HANDHOLES AND BOXES FOR EXTERIOR UNDERGROUND WIRING <br /> A. Performance Criteria: <br /> 1. Regulatory Requirements: Listed and labeled in accordance with NFPA 70 and <br /> marked for intended location and use. <br /> 2. General Characteristics: <br /> a. ASTM C858 for design and manufacturing processes. <br /> b. SCTE 77. <br /> 2.6 DUCT SEALING <br /> A. Duct-Sealing Compound: Nonhardening, safe for contact with human skin, not <br /> deleterious to cable insulation, and workable at temperatures as low as 35 deg F. <br /> Compound must be capable of withstanding temperature of 300 deg F without slump <br /> and adhering to clean surfaces of plastic ducts, metallic conduit, conduit and duct <br /> coatings, concrete, masonry, lead, cable sheaths, cable jackets, insulation materials, <br /> and common metals. Duct sealing compound must be removable without damaging <br /> ducts or cables. <br /> B. Inflatable Duct-Sealing System: Wraparound inflatable bladder that seals ducts that are <br /> empty or containing conductors against air and water infiltration. System is suitable for <br /> use in steel, plastic, or concrete ducts and penetrations. <br /> PART 3 - EXECUTION <br /> 3.1 PREPARATION <br /> A. Coordinate layout and installation of duct, duct bank, manholes, handholes, and boxes <br /> with final arrangement of other utilities, site grading, and surface features as <br /> determined in field. Notify Architect if there is conflict between areas of excavation and <br /> existing structures or archaeological sites to remain. <br /> B. Coordinate elevations of duct and duct-bank entrances into manholes, handholes, and <br /> boxes with final locations and profiles of duct and duct banks, as determined by <br /> coordination with other utilities, underground obstructions, and surface features. Revise <br /> locations and elevations as required to suit field conditions and to ensure that duct and <br /> duct bank will drain to manholes and handholes, and as approved by Architect. <br /> C. Bored Underground Duct: [EPEC-40] [EPEC-80] unless otherwise indicated. <br /> Coordinate first two paragraphs below with Drawings; consider indicating duct-bank <br /> reinforcement and backfill and pavement patching requirements on Drawings. <br /> 26 05 43 -4 UNDERGROUND DUCTS AND RACEWAYS FOR ELECTRICAL SYSTEMS <br />