Box

See Female Hex ConnectorA hexagonal shaped socket..

Branch Sewer

A sewer into which at least two sanitary, combined or stormwater sewers connect.

Breakout

ControlsPart of the microtunneling system that allows synchronized excavation, removal of spoils, and jacking of pipe to balance forward movement with excavation so that ground settlement and heave are managed. the joint make and/or break mechanism.

Bridge Plank (deck or flooring)

A corrugated steel sub-floor on a bridge to support a wearing surface.

Brittleness Temperature

Temperature at which 50% of the tested specimens will fail when subjected to an impact blow.