hollow brick

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Scope note
A hollow clay masonry unit whose net cross-sectional area in every plane parallel to the bearing surface is not less than 60% of its gross cross-sectional area measured in the same plane. In British usage it refers to a brick with holes in it that total at least 25% of its volume, the holes being not less than 3/4 in. (1.91 cm) wide or 3/4 sq. in. (4.84 sq. cm) in area.
hollow brick
Accepted term: 29-Apr-2024