Trenchless construction

Trenchless construction

Underground construction that involves little or no surface trenches so it has minimal disruption to traffic, business, and other activities. Trenchless technology is a fast growing sector of construction and civil engineering that covers such methods as boring, drilling, tunneling, and pipe ramming.

Industry: Construction

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Trenchless construction

Entry/exit angle

Construction; Trenchless construction

In a Horizontal Drilling or Guided Boring System, the angle to the ground surface at which the Drill String enters or exits in forming the pilot bore.

Restoration

Construction; Trenchless construction

The backfilling, compaction, and resurfacing of any excavation in order to restore the surface and underlying structure to enable it to perform its original function.

Cased bore

Construction; Trenchless construction

A bore in which a pipe, usually a steel sleeve, is inserted simultaneously with the boring operation. Usually associated with Auger Boring.

Impact moling

Construction; Trenchless construction

The use of a tool which comprises a percussive hammer within a suitable casing, generally of torpedo shape. The hammer may be pneumatic or hydraulic. The term is usually associated with non-steered ...

Test bore

Construction; Trenchless construction

Probing by auger or coring tool, usually vertically, at the site to determine soil conditions.

Horizontal directional drilling (HDD)

Construction; Trenchless construction

A 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 most crossings in which a fluid-filled ...

Locator

Construction; Trenchless construction

The electronic instrument used to determine the position and strength of electro-magnetic signals emitted from a transmitter in the pilot head of a boring system, in an impact moling tool, or from ...