Section 15080- Horizontal Directional Drilling

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15080 - 3/10 B. Pipe and appurtenances shall be unloaded opposite to or as close to the place where they are to be laid as is practical to avoid unnecessary handling. Interiors shall be kept completely free from dirt, water and foreign matter. C. The CONTRACTOR shall be responsible for the proper support of the piping to ensure that the pipe is not overstressed or damaged. D. If applicable, the CONTRACTOR shall submit to the City two additional transition couplings as spare parts, of the same type and specifications as the ones used to connect the directional drilled HDPE and the proposed DIP pipe. Transition couplings shall be delivered to the City’s Maintenance facility or as instructed by the City, and shall include all the necessary appurtenances to make two complete transitions from HDPE to DIP pipe. PART 2 - PRODUCTS 2.01 MATERIALS A. The material standards are to be interpreted as the minimum in place standards. Use materials that are appropriate for the stresses generated by the selected equipment and field conditions. B. The CONTRACTOR shall ensure that the appropriate material is used to retain compliance once it is installed. C. Refer to applicable Sections of this Specifications for detailed pipe material Specifications. 2.02 GENERAL EQUIPMENT A. The directional drilling equipment shall consist of a directional drilling rig of sufficient capacity to perform the bore and pullback the pipe, a drilling fluid mixing, delivery and recovery system of sufficient capacity to successfully complete the crossing, a drilling fluid recycling system to remove solids from the drilling fluid so that the fluid can be re-used, a guidance system to accurately guide boring operations, a vacuum truck of sufficient capacity to handle the drilling fluid volume, trained and competent personnel to operate the system. All equipment shall be in good, safe operating condition with sufficient supplies, materials and spare parts on hand to maintain the system in good working order for the duration of this project. 2.03 DRILLING SYSTEM A. Drilling Rig: The directional drilling machine shall consist of a hydraulically powered system to rotate, push and pull hollow drill pipe into the ground at a variable angle while delivering a pressurized fluid mixture to a guidable drill (bore) head. The machine shall be anchored to the ground to withstand the pulling, pushing and rotating pressure required to complete the crossing. The hydraulic power system shall be self-contained with sufficient pressure and volume to power drilling operations. Hydraulic system shall be free of leaks. Rig shall have a system to monitor and record maximum pull-back pressure during pull-back operations. The rig shall be grounded during drilling and pull-back operations. There shall be a