Trench Box

A preconstructed set of side plates and adjustable cross members to prevent the walls of the pit from collapsing.

Trenching

See open cut or conventional trenching.

Trenchless Technology

A family of construction techniques for installing or rehabilitating underground infrastructure with minimal disruption to surface traffic, businesses, and residents. Also includes technologies for inspection, leak location, and leak detection with minimal disruption and minimal excavation from the ground surface.

Trunk Sewer

A sewer into which at least two branch sanitary, combined or stormwater sewers connect. It conveys the flow to the Interceptor sewer. The trunk sewer is the longest connection sewer in any drainage basin. Also sometimes known as a “main” sewer.

Tuberculation

Localized corrosion at scattered locations resulting in knob like mounds.