Laserfiche WebLink
SECTION 33 05 23.13 <br />HORIZONTAL DIRECTIONAL DRILLING <br />PART 1— GENERAL <br />1.1 DESCRIPTION <br />A. Scope: Pipelines installed by the trenchless directional boring method <br />1.2 DEFINITIONS <br />A. Directional Boring or Horizontal Directional Drilling (HDD): Steerable trenchless method <br />of installing underground pipes, conduits and cables in a shallow arch along a prescribed <br />bore path by using a surface launched drilling rig, with minimal impact on the surrounding <br />area <br />1.3 SUBMITTALS <br />A. Shop Drawings and Product Data: Upon request from the Owner or Engineer the <br />Contractor shall submit the following: <br />1. Horizontal directional drilling experience meeting the requirements of this section. <br />2. Detailed construction scheduling plan complying with Section 013216, prior to the <br />pre - construction meeting. <br />3. Submit the type and capacity of the drilling rig to be used on the project, include <br />- manufacturer, pullback and push torque. Contractor to verify that allowable pipe <br />stresses of the pipe will not be exceeded by the drilling rig. Submit information on the <br />type of locating and tracking system. In addition, submit type and capacity of mud <br />mixing system. Include proposed composition of drilling fluid, viscosity, and density. <br />4. Submit a drawing showing proposed crossing configuration, including entry and exit <br />angles, radius of curvature, and entry and exit points. Drawings to include location <br />and dimensions of the starting area at both entrance and exit pits. Also include <br />information on the diameter of the pilot hole and size and number of pre - reamers used <br />for development of the borehole. <br />5. Submit information on the method to address and mitigate obstruction problems <br />during drilling, reaming, and potential problems of product pipe becoming stuck <br />during pipe pull back, emergency procedures when drilling through existing <br />underground utilities, or other events that lead to work stoppage. Procedures must <br />comply with all regulations. <br />6. Submit information on the method of slurry containment, method of recycling drilling <br />fluids and spoils (if applicable), or method of containing drilling fluids or spills and <br />transporting drilling fluids and spoils off -site (including anticipated volume), and <br />identify method and disposal site for drilling fluids and spoils. All material must be <br />disposed in accordance with local, state, and federal regulations. <br />7. Prior to construction, submit plan for cleanup and disposal of spills and fracouts <br />(drilling fluids, hydraulic fluids) including measures to contain and clean the affected <br />area. Include details for cleanup of surface seepage of drilling fluids and spoils. All <br />material must be disposed in accordance with local, state, and federal regulations. <br />330523.13 -I <br />