K-Rail

A modular concrete or plastic barrier employed to separate lanes of traffic. Also known as Jersey BarrierSee K-Rail..

Keepers

See Hold DownA hinged or removable assembly that secures the boring machine to the track..

Kip

A stress unit equal to 1000 pounds.

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.