Masonry Magazine April 1994 Page. 25
TABLE 3
Vertical Coursing1.2
Vertical Coursing of Unit
No. of
Courses 2C= 4 in. 3C = 8 in. 5C = 16 in. 1C= 4 in.
1 0'-2" 0'-2%" 0'-3%" 0'-4"
2 0'-4" 0'-5%" 0'-6%" 0'-8"
3 0'-6" 0'-8" 0'-9%" 1'-0"
4 0'-8" 0'-10%" 1'-0%" 1'-4"
5 0'-10" 1'-1%" 1'-4" 1'-8"
6 1'-0" 1'-4" 1'-7%" 2'-0"
7 1'-2" 1'-6%" 1'-10%" 2'-4"
8 1'-4" 1'-9%" 2'-1%" 2'-8"
9 1'-6' 2'-0" 2'-4%" 3'-0"
10 1'-8" 2'-2%" 2'-8" 3'-4"
11 1'-10" 2'-5%" 2'-11%" 3'-8"
12 2'-0" 2'-8" 3'-2%" 4'-0"
13 2'-2" 2'-10%" 3'-5%" 4'-4"
14 2'-4" 3'-1%" 3'-8%" 4'-8"
15 2'-6" 3'-4" 4'-0" 5'-0"
16 2'-8" 3'-6%" 4'-3%" 5'-4"
17 2'-10" 3'-9%" 4'-6%" 5'-8"
18 3'-0" 4'-0" 4'-9%" 6'-0"
19 3'-2" 4'-2%" 5'-0%" 6'-4"
20 3'-4" 4'-5%" 5'-4" 6'-8"
21 3'-6" 4'-8" 5'-7%" 7'-0"
22 3'-8" 4'-10%" 5'-10%" 7'-4"
23 3'-10" 5'-1%" 6'-1%" 7'-8"
24 4'-0" 5'-4" 6'-4%" 8'-0"
25 4'-2" 5'-6%" 6'-8" 8'-4"
26 4'-4" 5'-9%" 6'-11%" 8'-8"
27 4'-6" 6'-0" 7'-2%" 9'-0"
28 4'-8" 6'-2%" 7'-5%" 9'-4"
29 4'-10" 6'-5%" 7'-8%" 9'-8"
30 5'-0" 6'-8" 8'-0" 10'-0"
31 5'-2" 6'-10%" 8'-3%" 10'-4"
32 5'-4" 7'-1%" 8'-6%" 10'-8"
33 5'-6" 7'-4" 8'-9%" 11'-0"
34 5'-8" 7'-6%" 9'-0%" 11'-4"
35 5'-10" 7'-9%" 9'-4" 11'-8"
36 6'-0" 8'-0" 9'-7%" 12'-0"
37 6'-2" 8'-2%" 9'-10%" 12'-4"
38 6'-4" 8'-5%" 10'-1%" 12'-8"
39 6'-6" 8'-8" 10'-4%" 13'-0"
40 6'-8" 8'-10%" 10'-8" 13'-4"
41 6'-10" 9'-1%" 10'-11%" 13'-8"
42 7'-0" 9'-4" 11'-2%" 14'-0"
43 7'-2" 9'-6%" 11'-5%" 14'-4"
44 7'-4" 9'-9%" 11'-8%" 14'-8"
45 7'-6" 10'-0" 12'-0" 15'-0"
46 7'-8" 10'-2%" 12'-3%" 15'-4"
47 7'-10" 10'-5" 12'-6%" 15'-8"
48 8'-0" 10'-8" 12'-9%" 16'-0"
49 8'-2" 10'-10%" 13'-0%" 16'-4"
50 8'-4" 11'-1%" 13'-4" 16'-8"
100 16'-8" 22'-2%" 26'-8" 33'-4"
1 in. = 25.4 mm: 1 ft = 0.3 m
Brick positioned in wall as stretchers or headers.
brick are modular in height. The vertical coursing information given in Tables 1 and 2 is a reflection of this fact. Table 3 provides vertical dimensions based on the modular vertical coursing given in Tables 1 and 2. For example, units with heights which course vertically 2 courses to 4 in. (2C = 4 in.) such as Roman size, should use column 1 of Table 3. The dimensions given in Table 3 include typical mortar joints of % in. to ½ in. The actual mortar joint size can be determined from the vertical coursing information and the specified unit size. For example, when coursing out with a modular height unit, the mortar bed joint is slightly larger than % in. and slightly less than ½ in., so that 3 courses of brick and mortar will equal the 8 in. module. For most brick sizes the mortar bed joint will not be exactly %in. nor ½ in. Table 3 is applicable to both modular and non-modular brick. In this table, the brick are assumed to be positioned in the wall as stretchers or headers.
Horizontal coursing information is given in Table 4. The table includes coursing for both modular and non-modular brick.
Another useful tool for designers is the brick scale. The brick scale is a coursing scale marked with multiples of common nominal brick sizes. They come in a set which matches the most common architectural scales, in. = 1 ft-0 in., % in. = 1 ft-0 in., etc. Many brick manufacturers, brick distributors and masonry promotional groups provide brick scales to designers.
CONCLUSION
This Technical Notes presents the standard nomenclature for brick sizes. Information on brick sizes is given and the differences between nominal, specified and actual dimensions are explained. Coursing tables for both modular and non-modular brick are provided.
The information and suggestions contained in this Technical Notes are based on the available data and the experience of the engineering staff of the Brick Institute of America. The information contained herein must be used in conjunction with good technical judgment and a basic understanding of the properties of brick masonry. Final decisions on the use of the information contained in this Technical Notes are not within the purview of the Brick Institute of America and must rest with the project architect, engineer and owner.
MASONRY-MARCH/APRIL, 1994 25