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board-and-batten construction

Wall construction for a timber-framed house in which the exterior covering consists of closely spaced boards set vertically, with narrow wood strips covering […]

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blunt arch

An arch rising to a slight point, struck from two centers within the arch.

Glossary

Blinding

Before the oversite {concrete} is laid it is usual to blind the top surface of the {hardcore}. The purpose of

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blow-off

On a boiler, an outlet to permit the  discharge of accumulated deposits from water.

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block plane

A small plane, held in one hand; the angle of the cutting blade is low (usually about 20°); esp. used to clean

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blockhouse

1. A fortified structure used to furnish protection against enemy attack in frontier areas, usually at a location of strategic importance; often square

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General

block

1. A masonry unit; a concrete block. 2. (Brit.) A walling unit which exceeds in length, width, or height the dimensions specified

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