Mix No. 1
Curbs, Gutters and Streets
|
Mix No. 2
Sidewalks
| ||
---|---|---|---|
Water-cement ratios (maximum gallons/bag)
|
5.5
|
6
| |
Cement content (minimum bags)
|
6.6
|
6
| |
Air content
|
6% ± 1%
|
6% ± 1%
| |
Aggregate size (inches)
|
3/4 -1
|
3/4 -1
| |
Slump (inches)
|
3 ± 1
|
3 ± 1
| |
Fine aggregate (maximum)
|
40%
|
40%
| |
Strength (pounds per square inch)
|
4,200
|
3,750
|
Diameter
(inches)
|
Gauge
(aluminum)
|
Gauge
(corrugated)
| |
---|---|---|---|
15
|
14
|
16
| |
18
|
12
|
16
| |
21
|
12
|
16
| |
24
|
12
|
14
| |
30
|
12
|
14
| |
36
|
10
|
12
| |
42
|
10
|
12
| |
48
|
10
|
10
| |
54
|
8
|
10
| |
60
|
8
|
8
|