954.3(c) 954.3(e) Before fiber optic cable installation, verify duct integrity to discover any missing sections, improper couplings, kinks, or blockage in the ducts. Use sponge testing to clean out water and debris. Repair, replace, or clean duct to ensure cable installatio n meets or exceeds manufacturer’s guidelines. After installing all related cables, seal all conduits within junction boxes and foundations, including all spare or abandoned conduits, with electrical putty or an approved sealant as recommended by the cable or conduit manufacturer. Insert grade 3 or 4 stainless steel wool at a minimum of 2 inches in the conduit before the sealant. When installing conduit to an existing foundation, do not compromis e the integrity of the foundation. Restore any concrete loss to the foundation. Exposed conduit accessing an existing foundation must be rigid metal as specified in Section 954.2(b)1.
depth between 36 inches and 48 inches. Install under highways and commercial driveways at a minimum depth of 60 inches and under residential streets at a depth between 36 inches and 48 inches. Install conduit as indicated. Maintain at least a 12 -inch separation between conduit and other perpendicular underground utilities. Maintain a minimum 18 -inch separation in all directions for a parallel installation with existing utilities. Pull strength of the conduit is calculated at 80 % of tensile or breaking strength which for a HDPE SDR11 1 1/4-inch conduit is approximately 1,700 pounds.
Each microduct will have a 1/2-inch-wide pull line with a minimum pull strength of 1,250 pounds. Pull line made of polyester or similar material and have sequential footage markings. Perform separate pressure testing on each individual microduct. Each microduct must maintain 100 pounds per square inch for a period of 1 minute with a minimum of 5 % pressure drop allowed. Record and deliver to the Representative each test result upon completion and before installing cable. Complete proof testing of each microduct from pull point to pull point and all transitions. Each microduct must be proofed with an appropriately sized proofing ball to ensure that a minimum of 80 % of the published inner dimension is maintained.
Standard Drawings, as specified in Section 910.3(q), and as follows: Provide a continuous mechanical and electrical grounding system from the controller assembly through the electrical distribution system. Bridge grounding bushings on rigid metallic conduit. Thread bonding bushings on the free ends and lock in plac