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heart bond[′härt ‚bänd]
A masonry bond in which two header stones meet in the middle of the wall, their joint being covered by another stone; no headers stretch across the wall.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
In masonry, a bond, 6 in a masonry wall, in which two headers meet in the middle of the wall and another header covers the joint between them.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.