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cavity wall[′kav·əd·ē ‚wȯl]
A wall constructed in two separate thicknesses with an air space between; provides thermal insulation. Also known as hollow wall.
1. A wall assembly constructed of two wythes of masonry bonded with wall ties and separated by an air cavity, which is sometimes filled with insulation.
2. An exterior wall, usually of masonry, consisting of an outer course and an inner course separated by a continuous air space connected by metal ties.See also: Wall
cavity wall, hollow masonry wall, hollow wall
An exterior wall, usually of masonry, consisting of an outer and inner withe separated by a continuous air space, but connected together by wire or sheet-metal ties. The dead air space provides improved thermal insulation.