Piling

Rigid supports, driven vertically to provide wall support in the pit.

Pilot Bore

The action of creating the first (usually steerable) pass of any boring process which later requires back-reaming or similar enlarging. Most commonly applied to Guided BoringMethod for the installation of pipes, conduits and cables using a surface-launched drilling rig. A pilot bore is drilled using a rotating drill string and is then enlarged by a back reamer to the size required for the product pipe. The necessary deviation during the pilot boring is provided by a slanted face to the drill head, an asymmetric drill..., Directional DrillingA steerable system for the installation of pipes, conduits and cables in a shallow arc using a surface launched drilling rig. Traditionally the term applies to large scale crossings in which a fluid-filled pilot bore is drilled using a fluid-driven motor at the end of a bend-sub, and is then enlarged by a washover pipe and back reamer to the..., and 2-pass microtunneling systems.

Pilot Tube Method

A multistage method of accurately installing a product pipe to line and grade by use of a guided pilot tube followed by upsizing to install the product pipe. The pilot tube method does not fit within the definition of microtunneling.

Pins

See ShankA hardened male hex bar, containing one or more transverse holes, to couple and hold in a female hex connector..

Pipe

A long tube of clay, concrete, steel, metal, wood, etc., for conveying water, gas, oil or other materials.