Project

The entire construction to be performed as provided in the contract documents.

Protruding

To be projecting outward.

PSI

Pounds per Square Inch. US customary unit for pressure. One PSIPounds per Square Inch. US customary unit for pressure. One PSI equals 6.896 Kilonewtons per square meter. equals 6.896 Kilonewtons per square meter.

Pull Back

That part of a guided boring or directional drilling operation in which the drill string is pulled back through the bore to the entry pit or surface rig, usually installing the product pipe at the same time.

Pull Back Force

The tensile load applied to a drill string during the pull back process. Guided boring and directional drilling rigs are generally rated by their maximum pull-back force.