The International Society for Trenchless Technology

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Glossary

There are 211 entries in this glossary.
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Term Definition
Narrow Trenching

Method of excavation of a trench up to 100 mm wider than the outside diameter of the service to be installed, usually employing either a rockwheel or chain type trencher.

New Installation

Construction of a new pipe or underground utility to replace or upgrade an existing system or to provide new service.

Non-Structural Renovation

Pipe renovation method that relies on the host pipe to meet the structural integrity requirements of the utility.

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