Installation Instructions
CLIFTON STRAIGHT
Geogrid
The required type, length, vertical spacing, and strength of geosynthetic vary with each project depending on wall height,
loading, slopes, and soil conditions. Poor draining soils such as clay require more geogrid than granular soils, which drain
well. Typically, grid should be placed every 2 or 3 courses and should extend back a distance about equal to three-quarters
the height of the wall. The number of layers of grid that will be required and how far back the grid should extend shall be
determined by your engineer. See Midwest Manufacturing Engineering for more details.
These geogrid tables are for preliminary use only. They should not be used or relied upon for any application without verifi-
cation of accuracy by a qualified engineer.
Drain Pipe
The length of the wall will in most
cases determine the amount of
drainpipe needed. Check the plan
for exact specifications and locations
of the drainpipe.
Concrete Adhesive
Use one 10.5-ounce tube of adhesive for
every 14 ft. of wall length where Step/
Caps and Corners are installed. Use one
29-ounce tube of adhesive for every 39
ft. of wall length where Step/Caps and
Corners are installed.
ø=34 deg. 120 pcf, No Surcharge,
No Slope, Sand and Medium Gravel
5 3.33 0.5
6 4.00 0.5
7 4.67 0.5
8 5.33 0.5
9 6.00 0.5
10 6.67 0.5
11 7.33 0.5
12 8.00 0.5
13 8.67 0.5
14 9.33 0.5
15 10.00 0.5
# of Wall Embedment
Units Height (ft) (ft)
# of Wall Embedment
Units Height (ft) (ft)
# of Wall Embedment
Units Height (ft) (ft)
# of Length
Rows (ft)
# of Length
Rows (ft)
# of Length
Rows (ft)
1 4
1 4
2 4
2 4
2 4.28
3 4.66
3 5.04
3 5.42
4 5.81
4 6.19
4 6.57
ø=34 deg. 120 pcf, 250 psf Surcharge,
No Slope, Sand and Medium Gravel
2 1.33 0.5
3 2.00 0.5
4 2.67 0.5
5 3.33 0.5
6 4.00 0.5
7 4.67 0.5
8 5.33 0.5
9 6.00 0.5
10 6.67 0.5
11 7.33 0.5
12 8.00 0.5
13 8.67 0.5
14 9.33 0.5
15 10.00 0.5
1 4
1 4.5
1 6.1
2 4.7
2 5
2 5.38
3 5.76
3 6.14
3 6.52
4 6.91
4 7.29
4 7.67
5 8.05
5 8.43
ø=34 deg. 120 pcf, No Surcharge,
21.8 deg. Slope, Sand and Medium Gravel
4 2.67 0.5
5 3.33 0.5
6 4.00 0.5
7 4.67 0.5
8 5.33 0.5
9 6.00 0.5
10 6.67 0.5
11 7.33 0.5
12 8.00 0.5
13 8.67 0.5
14 9.33 0.5
15 10.00 0.5
1 4
1 4
1 4
2 4
2 4.39
2 4.87
3 5.35
3 5.83
3 6.31
4 6.79
4 7.27
4 7.74
6 3.00 0.5
7 3.50 0.5
8 4.00 0.5
9 4.50 0.5
10 5.00 0.5
11 5.50 0.5
12 6.00 0.5
13 6.50 0.5
14 7.00 0.5
15 7.50 0.5
16 8.00 0.5
17 8.50 0.5
18 9.00 0.5
19 9.50 0.5
20 10.00 0.5
1 4
1 4
1 4
2 4
2 4
2 4
2 4.22
3 4.5
3 4.78
3 5.06
3 5.33
4 5.61
4 5.89
4 6.71
4 6.45
3 1.50 0.5
4 2.00 0.5
5 2.50 0.5
6 3.00 0.5
7 3.50 0.5
8 4.00 0.5
9 4.50 0.5
10 5.00 0.5
11 5.50 0.5
12 6.00 0.5
13 6.50 0.5
14 7.00 0.5
15 7.50 0.5
16 8.00 0.5
17 8.50 0.5
18 9.00 0.5
19 9.50 0.5
20 10.00 0.5
1 4
1 4
1 4.2
1 5.1
2 4.1
2 4.4
2 4.7
2 4.92
3 5.2
3 5.48
3 5.76
3 6.04
4 6.31
4 6.59
4 6.87
4 7.15
4 7.43
4 7.7
5 2.50 0.5
6 3.00 0.5
7 3.50 0.5
8 4.00 0.5
9 4.50 0.5
10 5.00 0.5
11 5.50 0.5
12 6.00 0.5
13 6.50 0.5
14 7.00 0.5
15 7.50 0.5
16 8.00 0.5
17 8.50 0.5
18 9.00 0.5
19 9.50 0.5
20 10.00 0.5
1 4
1 4
1 4
1 4
2 4
2 4.09
2 4.44
2 4.79
3 5.14
3 5.49
3 5.84
3 6.18
4 6.53
4 6.88
4 7.23
4 7.58
CliftonDenver
# of Wall Embedment
Units Height (ft) (ft)
# of Wall Embedment
Units Height (ft) (ft)
# of Wall Embedment
Units Height (ft) (ft)
# of Length
Rows (ft)
# of Length
Rows (ft)
# of Length
Rows (ft)
ø=26 deg. 110 pcf, No Surcharge, No Slope, Clay
4 2.67 0.5
5 3.33 0.5
6 4.00 0.5
7 4.67 0.5
8 5.33 0.5
9 6.00 0.5
10 6.67 0.5
11 7.33 0.5
12 8.00 0.5
13 8.67 0.5
14 9.33 0.5
15 10.00 0.5
1 4
1 4
1 4.8
2 4.2
2 4.63
2 5.19
3 5.56
3 6.12
3 6.59
4 7.05
4 7.52
4 7.98
ø=26 deg. 110 pcf, 250 psf Surcharge, No Slope, Clay
3 2.00 0.5
4 2.67 0.5
5 3.33 0.5
6 4.00 0.5
7 4.67 0.5
8 5.33 0.5
9 6.00 0.5
10 6.67 0.5
11 7.33 0.5
12 8.00 0.5
13 8.67 0.5
14 9.33 0.5
15 10.00 0.5
2 4.33
2 5.83
2 7.4
2 7.9
2 8.3
3 8.83
3 9.32
3 9.69
4 10.25
4 10.72
5 11.08
5 11.66
5 12.11
ø=26 deg. 110 pcf, No Surcharge, 21.8 deg. Slope, Clay
2 1.33 0.5
3 2.00 0.5
4 2.67 0.5
5 3.33 0.5
6 4.00 0.5
7 4.67 0.5
8 5.33 0.5
9 6.00 0.5
10 6.67 0.5
11 7.33 0.5
12 8.00 0.5
13 8.67 0.5
14 9.33 0.5
15 10.00 0.5
1 4
1 4
1 4
1 4.3
1 5.5
2 5.6
2 6.5
3 7.4
3 8.3
3 9.2
4 10.1
4 11.5
5 13
5 14.8
5 2.5 0.5
6 3.00 0.5
7 3.50 0.5
8 4.00 0.5
9 4.50 0.5
10 5.00 0.5
11 5.50 0.5
12 6.00 0.5
13 6.50 0.5
14 7.00 0.5
15 7.50 0.5
16 8.00 0.5
17 8.50 0.5
18 9.00 0.5
19 9.50 0.5
20 10.00 0.5
1 4
1 4
1 4
1 4.7
2 4
2 4.36
2 4.7
2 5.04
3 5.38
3 5.73
3 6.07
3 6.41
4 6.75
4 7.1
4 7.44
4 7.78
3 1.50 0.5
4 2.00 0.5
5 2.50 0.5
6 3.00 0.5
7 3.50 0.5
8 4.00 0.5
9 4.50 0.5
10 5.00 0.5
11 5.50 0.5
12 6.00 0.5
13 6.50 0.5
14 7.00 0.5
15 7.50 0.5
16 8.00 0.5
17 8.50 0.5
18 9.00 0.5
19 9.50 0.5
20 10.00 0.5
2 4
2 5.16
2 5.5
2 7.8
2 8.16
2 8.5
2 8.9
3 9.18
3 9.53
3 9.87
3 10.21
4 10.55
4 10.9
4 11.24
4 11.58
5 11.92
5 12.27
5 12.61
3 1.50 0.5
4 2.00 0.5
5 2.50 0.5
6 3.00 0.5
7 3.50 0.5
8 4.00 0.5
9 4.50 0.5
10 5.00 0.5
11 5.50 0.5
12 6.00 0.5
13 6.50 0.5
14 7.00 0.5
15 7.50 0.5
16 8.00 0.5
17 8.50 0.5
18 9.00 0.5
19 9.50 0.5
20 10.00 0.5
1 4
1 4
1 4
1 4
1 4.5
1 5.35
2 5.1
2 5.7
2 6.4
3 6.95
3 8.33
3 8.5
3 8.9
4 9.5
4 11.5
4 11.75
5 13.2
5 14.4
Clifton
Denver
ESTIMATES FOR DRAIN PIPE, ADHESIVE AND GEOGRID