Maximum Anticipated Jacking Force

The largest anticipated jacking force required to advance jacking pipe and machine along a drive.

Measurement While Drilling (MWD)

Borehole survey instrumentation that provides continuous information simultaneously with drilling operations, usually transmitting to a display at or near the drilling rig.

Mechanical Cleaning

Methods used to clean sewer lines of debris mechanically with devices such as rodding machines, bucket machines winch-pulled brushes, etc.

Mechanical Props Repair

See ReroundingA preparatory process which involves the insertion of an expansion device into a distorted pipe to return it to a circular cross section. This is usually carried out prior to the insertion of a permanent liner or supporting band..

Median Barrier

A double-faced guardrail in the median or island dividing two adjacent roadways.