Laser

A device commonly incorporated into the guidance system and used to track alignment and grade during the tunneling or jacking operation.

Lateral

A service line that transports wastewater from individual buildings to a main sewer line.

Lateral Connection

The point at which the downstream end of a building drain or sewer connects into a larger diameter sewer.

Lateral Spur

The lateral spur is that section of the sewer lateral which extends from the county sewer line to the end of the sewer lateral from the house/building which generally terminates one foot within the property line. LateralA service line that transports wastewater from individual buildings to a main sewer line. spurs are installed at the time the sewer is constructed to prevent future dig-up of the street.

Launch Pit

Also known as DriveDesignation of the pipe installed from a jacking shaft to a reception shaft. Pit, but more usually associated with “launching” an Impact MolingMethod of creating a bore using a pneumatic or hydaulic hammer within a casing, generally of torpedo shape. The term is usually associated with non-steered or limited steering devices without rigid attachment to the launch pit, relying upon the resistance of the ground for forward movement. During the operation the soil is displaced, not removed. An unsupported bore may be... tool.