Potholing

Small, carefully dug, nonmechanized excavation, used to locate a utility or other subsurface feature.

Power Package

The engine and drive section of a split boring machine or the remote engine and hydraulic pumps of a power unit.

Power Requirements

Manufacturer’s recommend maximum flow and pressure.

PPI (Plastic Pipe Institute)

A division of The Society of the Plastics Industry, Inc.

PRC

PolyesterResin formed by condensation of polybasic and monobasic acids with polyhydric alcohols. Resin Concrete