Masonry Magazine January 1971 Page.103
4.4/Str
appearance, most designers required that the vertical coursing in the addition built with modular brick match those in the existing building constructed with non-modular brick. It was agreed, therefore, that the manufactured face height of the standard modular brick would remain at 24 in., even though the other dimensions (length and thickness) would become modular. This custom has continued since then. The differences in mortar bed thickness required to maintain the modular coursing of three courses in 8 in. were considered minimal.
POSITION OF BRICK IN THE WALL
Most brick are laid as "stretchers", so that the longer of the face dimensions is horizontal (Fig. 3). Figure 3 also illustrates terms applied to other brick positions as placed in the wall. The shaded areas indicate the surfaces of the brick that are exposed.
COURSING TABLES
Tables 3 and 4 contain vertical coursing dimensions for both non-modular and modular brick. For the non-modular brick in Table 3, vertical coursing dimensions are shown for both 3/8 and 1/2-in. mortar joints. In both tables the brick are assumed to be positioned in the wall as stretchers.
RELATED INFORMATION
For related information, the following issues of *Technical Notes on Brick and Tile Construction* are suggested:
No. 2 Glossary of Terms
No. 9 Manufacturing Structural Clay Products
No. 10 Estimating Brick Masonry
No. 10A Modular Clay Masonry
No. 15 Salvaged Brick
No. 30 Bonds and Patterns in Brickwork
TABLE 1
Sizes of Non-Modular Brick
Unit Designation
Manufactured Size, in.
t
h
Three-inch¹
3
2%
9%
3
2%
9%
Standard
3%2
24
8
Oversize
3%2
2%
8
¹In recent years, the so-called "three-inch" brick has gained popularity in certain areas. The term "three-inch" designates its thickness or bed depth. The sizes shown in the table are the ones most commonly produced under the designation "Kingsize". Other sizes of 3-in. brick are also produced under such designations as "Big John", "Jumbo", "Scotsman" and "Spartan". Originally developed primarily for use as a veneer unit, it is also used to construct 8-in, cavity walls and 8-in, grouted walls.
²The manufactured thickness of standard or oversize non-modular brick will vary from 3% to 3% in. Therefore, if other than a running bond is desired, the designer should check with the manufacturer of the brick selected.
FIGURE 1. NON-MODULAR BRICK
(Actual Dimensions)
NOTE: While the coring types shown are typical for solid units, they do not necessarily apply to the specific types of units with which they are shown above. They will vary with the manufacturer.