56.25 CMU/day and you calculated 9 days. Then multiply 56.25 times 9 which equals 506 block. There is a two block difference which is not much in this example, but it could be if you were estimating thousands of square feet of CMU.

BRICK CONSTRUCTION

Brick masonry is masonry construction in which units of baked clay or shale of uniform size, small enough to be placed with one hand, are laid in courses with mortar joints to form walls. Bricks are kiln-baked from various clay and shale mixtures. The chemical and physical characteristics of the ingredients vary considerably. These characteristics and the kiln temperatures combine to produce brick in a variety of colors and hardness. In some regions, individual pits yield clay or shale which, when ground and moistened, can be formed and baked into durable brick. In other regions, clay or shale from several pits must be mixed.

MASONRY TERMS

To lay brick efficiently and effectively, you must be familiar with the terms that identify the position of masonry units in a wall. The following list, which is referenced to figure 4-1, provides some of the basic terms you will encounter:

Course - One of several continuous, horizontal layers (or rows) of masonry units bonded together.

Wythe - The wythe is a continuous vertical section of a wall, one masonry unit thick. This is sometimes called a tier.

Figure 4-1. - Masonry units.