910.3(b) 910.3(f) the Representative. Obtain approval of the completed foundation forms before concrete placement. Remove water from the foundation holes before concrete placement.
trenches for conduit runs parallel to the roadway, or as indicated. The preferred location is off of the shoulder. Provide a minimum 18 inch clearance from all underground utilities. Backfill the same day if possible. Remove rock within the excavation unless an alternate layout is authorized. Remove and dispose unsuitable material and excess excavation as directed. Place plastic marking tape within the last layer of backfill material for the entire length of the trench. Provide bedding soil for conduits as specified in Section 206.2(a)1.a. Backfill the remaining portion of the trenches with suitable on -site material to match existing conditions as shown on the Standard Drawings . Do not use coarse aggregate, except within the subbase area or as directed. Compact trench material as specified in Section 601.3(f). Stake trench alignments for inspection and acceptance before excavating when they deviate from the indicated location. Submit the layout for review and acceptance before proceeding if the alignments extend the overall indicated circuit length by more than 5%.
Before erection of high mast poles, mix, cure, and test samples of the foundation concrete according to Department procedures. Verify the ground elevation at the foundation location for all high mast pole foundations. Provide and place anchor bolts perpendicular to the top plane of the foundation. Use suitable templates or forms to hold the anchor bolts in position while placing concrete. Clean the exposed portion of anchor bolts and associated hardware. Install the necessary number of conduit sweep elbows and orient them inside the foundation to avoid unnecessary bends in the conduit runs. Fasten elbows securely to prevent movement while concrete is being placed. For high mast pole foundations, install a 1 -inch conduit for the grounding electrode conductor. For all other types of poles, install ground rod in pole foundation. Connect No. 4 AWG copper grounding electrode conductor to the ground rod with an exothermic weld or bronze connector, extend the other end through the center of the foundation, and leave 30 inches coiled above the foundation. Test the resistance to earth ground before placing concrete. Install additional ground rods (a minimum of 6 feet apar t) if the measured resistance between the ground rod and earth is greater than 25 ohms.