Baroid

Proprietary equipment to measure the density of annulus grout.

Barrel

The vertical section in a manhole between the cone and the benchwall.

Base

The slab structure which supports a manhole.

Base (Course)

A layer of specified or selected material of planned thickness, constructed on the subgrade (natural foundation) or subbase for the purpose of distributing load, providing drainage or upon which a wearing surface or a drainage structure is placed.

Base Resin

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.