Search results with tag "Horizontal directional"
Avoiding Underground Utilities during Horizontal ...
www.osha.govWhat is Horizontal Directional Drilling? HDD is a trenchless technology that uses surface-launched equipment to drill underground horizontally and install pipes, conduits, and cables. HDD is used in several industries, such as utilities and telecommunications, at sites with limited space (e.g., dense, urban areas) or where traditional vertical
United States Department of Specifications and Agriculture ...
www.rd.usda.gov12 In Part III, section 4, added when placing cable or wire by horizontal directional drilling (HDD) or boring, the cable or wire bore route must be pre-planned and mapped for the most efficient path. 13 In Part III, section 4, added a underground pipe assembly unit (BM60( )) may use the "R"
Synthesis of Trenchless Technologies
www.virginiadot.orgstandard, specification, or regulation. Any inclusion of manufacturer names, trade names, or ... microtunneling, and horizontal directional drilling (HDD). In this study, pipe jacking was also examined. The study focused on the most commonly used trenchless methods for new
Horizontal Directional Drilling - plastic pipe
plasticpipe.orgHorizontal Directional Drilling Process Knowledge of the directional drilling process by the reader is assumed, but some review may be of value in establishing common terminology. Briefly, the HDD process begins with boring a small, horizontal hole (pilot hole) under the crossing obstacle (e.g. a highway) with a continuous string of steel drill ...