Technical Information | Wall Weights and Areas
(Excerpted from Design of Reinforced Masonry Structures, published by CMACN)
Desert Block Co., Inc. supplies this information as an educational aid in understanding the benefits of concrete masonry construction and our products. It is the responsibility of the user to obtain engineering or other advisory services from licensed professionals as the basis for incorporating into any project any information, detail, or product offered herein.
Average Weight of Completed Wall1
Pounds Per Square Foot and Equivalent Solid Thickness
|
Hollow Concrete Block |
Equivalent Solid Thickness2
Inches |
Lightweight
103 pcf |
Mediumweight
115 pcf |
Normalweight
135 pcf |
Wall Thickness |
6" |
8" |
10" |
12" |
6" |
8" |
10" |
12" |
6" |
8" |
10" |
12" |
6" |
8" |
10" |
12" |
Solid grouted wall |
52 |
75 |
93 |
118 |
58 |
78 |
98 |
124 |
63 |
84 |
104 |
133 |
5.6 |
7.6
|
9.6 |
11.6 |
vertical
cores
grouted
at |
16" o.c. |
41 |
60 |
69 |
88 |
47 |
63 |
80 |
94 |
52 |
66 |
86 |
103 |
4.5 |
5.8 |
7.2 |
8.5 |
24" o.c. |
37 |
55 |
61 |
79 |
43 |
58 |
72 |
85 |
48 |
61 |
78 |
94 |
4.1 |
5.2 |
6.3 |
7.5 |
32" o.c. |
36 |
52 |
57 |
74 |
42 |
55 |
68 |
80 |
47 |
58 |
74 |
89 |
4.0 |
4.9 |
5.9 |
7.0 |
40" o.c. |
35 |
50 |
55 |
71 |
41 |
53 |
66 |
77 |
46 |
56 |
72 |
86 |
3.8 |
4.7 |
5.7 |
6.7 |
48" o.c. |
34 |
49 |
53 |
69 |
40 |
45 |
64 |
75 |
45 |
55 |
70 |
83 |
3.7 |
4.6 |
5.5 |
6.5 |
|
1) The above table gives the average weights of completed walls of various thickness in pounds per square foot of wall face area. An average amount has been added into these values to include the weight of bond beams and reinforcing steel.
2) Equivalent solid thickness means the calculated thickness of the wall if there were not hollow cores, and is obtained by dividing the volume of solid material in the wall by the face area of the wall. This Equivalent Solid Thickness (EST) is for the determination of area for structural design only, e.g. fs = P/(EST)b. It is NOT to be used to obtain fire ratings. Fire rating thickness is based either on equivalent solid thickness of ungrouted units only or solid grouted walls.
CMU per Square Foot of Wall Area
|
Unit Length |
16 |
18 |
24 |
Unit
Height |
4 |
2.25 |
2.00 |
- |
6 |
1.50 |
1.33 |
- |
8 |
1.125 |
1.00 |
.75 |
|
Example: |
|
|
Wall Area |
= |
12,500 Sq. Ft. |
Unit Face Size |
= |
8 x 16 |
12,500 x 1.125 |
= |
14,063 Units |
|
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