General

backup strip

A piece of wood at the corner of a ceiling and side wall; serves as the mounting for the ends

General

backup rod

A strip of plastic foam that is inserted in a joint to limit the penetration of sealant into the joint.

General

backup protection

In an electrical system, a type of protection initiated by a sensing device that detects a failure of a protective

General

backup

backup 1. That part of a masonry wall behind the exterior facing. 2. A compressible material used behind a sealant

General

backstage

The entire area behind the fire wall of the stage of a theater, including the rear of the stage, storage

Glossary

Backout

Work the framing contractor does after the mechanical subcontractors (Heating-Plumbing-Electrical) finish their phase of work at the Rough (before insulation)

General

backsight

In surveying, a sight on a previously established survey point or line.

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