beam box

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[′bēm ‚bäks]

(building construction)

wall box, beam box, wall frame

1. A frame or box which is set into a brick, masonry, or stone wall to receive a timber beam or joist.

2. In electrical wiring, a metal box which is set in a wall for switches, receptacles, etc.

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Beam boxes are often part of the floor frame of small buildings, and they need to come together square and true.

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