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

boring

Construction; Trenchless construction

The dislodging or displacement of spoil by a rotating auger or drill string to produce a hole called a bore.

guidance system

Construction; Trenchless construction

The guidance system continuously confirms the position of the MBTM.

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 ...

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 ...

casing pipe

Construction; Trenchless construction

A pipe installed as external protection to a Product Pipe or Carrier Pipe.

upsizing

Construction; Trenchless construction

Any method which increases the cross sectional area of an existing pipeline by replacing with a larger diameter pipe.

carrier pipe

Construction; Trenchless construction

The tube which carries the product being transported and which may go through casings at highway and railroad crossings. It may be made of steel, concrete, clay, glassfiber reinforced polyester, ...