A course is a layer of the same unit running horizontally in a wall. It can also be defined as a continuous row of any masonry unit such as bricks, concrete masonry units (CMU), stone, shingles, tiles, etc.[1]
Coursed masonry construction arranges units in regular courses. Oppositely, coursed rubble masonry construction uses random uncut units, infilled with mortar or smaller stones.[1]
If a course is the horizontal arrangement, then a wythe is a continuous vertical section of masonry [2] one unit in thickness. A wythe may be independent of, or interlocked with, the adjoining wythe(s). A single wythe of brick that is not structural in nature is referred to as a masonry veneer.
A standard 8-inch CMU block is exactly equal to three courses of brick.[3] A bond (or bonding) pattern) is the arrangement of several courses of brickwork.[2]
The corners of a masonry wall are built first, then the spaces between them are filled by the remaining courses.[4]
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