PlasticAny of a variety of thermoplastic and thermoset material used in sewer construction (e.g., high-density polyethylene, polypropylene, PVC, fiberglass reinforced plastics, polyester felt reinforced pipe, epoxy and polyester mortars, etc). materials prior to compounding with other additives or pigments.
See Master TrackThe rear most track section..
The slope or inclination from a vertical plane, as the face or back of a wall.
A prepared layer of material below a pipeline to ensure uniform support.
Shims or other steel plates added to the bottom of the MTBM to adjust the machine’s location within the excavation. Also known as belly plates.