Retaining Wall Geogrid and No-Fines Concrete Estimating Charts
These pre-engineered tables provide an accurate estimate for geogrid reinforcement. To use the tables, follow these simple steps:
- Verify that the site condition of your retaining wall matches the table being used.
- Verify that the soil conditions at your site match the description given.
- Choose the retaining wall height needed for your site and read across to find the number of grid layers, embedment length and grid locations.
- Verify that excessive water runoff, or a high water table, is not present.
Case A
Case B
You will get efficient and thoughtful service from Shuangcheng New Material.
Related links:Differences in Stick Welding (7018 vs 6013)
What is the Purpose of a Die Cutting Machine?low-pressure injection molding and traditional ... - GREFEE moldCase C
Design Parameters
Factors of Safety
Assumed Unit Weights
Sliding
=1.5
Earth Backfill
= 120 lbs/ft³ (19 kN/m³)
Overturning
=2.0
Filled weight of AB
= 131 lbs/ft³ (20.5 kN/m³)
No-Fines Overturning
=1.5
Allan Block
= 135 lbs/ft³ (17.3 kN/m³)
Grid Pullout
=1.5
No-Fines Concrete
= 110 lbs/ft³ (21.1 kN/m³)
Grid Rupture
=1.5
General
Assumed Soil Capacities
Proper drainage provided.
Cohesion
= 0
Grid meets ASTM D-
Bearing Capacity 36° (Ref)
&#; 4,000 psf (191.520 kPa)
Bearing Capacity 32° (Ref)
&#; 3,500 psf (167.580 kPa)
Bearing Capacity 27° (Ref)
&#; 2,500 psf (119.700 kPa)
Grid
Long Term Allowable Design Strength (LTADS) &#; 700 lbs/ft. (10,200 N/m)
These charts should be used for estimating grid quantities for projects which match the site and soil descriptions provided, and only for projects which use grid strengths of 700 lbs/ft. (10,200 N/m) or higher.
No provision or analysis for global stability or seismic activity are included.
The charts below assume for geogrid reinforced walls, that the reinforcement starts on the first course of block, and then every second course thereafter. The charts below are for material estimates only, contact your local engineer for wall design.
For more information, please visit Wholesale structural geogrid mesh.
Geogrid Chart
AB Stones - 12° (Ref)
Soil Types: Coarse to medium sands, clean sand and gravel, little or no fines φ = 36° (Ref)
Soil Types: Uniform to well graded sands, silty sands φ = 32° (Ref)
Soil Types: Sand-silt-clay mix, clayey sands φ = 27° (Ref)
Condition Above Wall
Wall Height
Buried Block
# of grid layers
Grid Lengths
# of grid layers
Grid Lengths
# of grid layers
Grid Lengths
ft
m
in
cm
ft
m
ft
m
ft
m
Case A
Level Slope
Above the Wall
3
0.9
6
15
0
-
-
0
-
-
0
-
-
4
1.2
6
15
0
-
-
0
-
-
3
3
1
5
1.5
6
15
0
-
-
0
-
-
4
3.5
1.1
6
1.8
6
15
5
4
1.3
5
4
1.3
5
4
1.3
7
2.1
7
18
6
5
1.6
6
5
1.6
6
5
1.6
8
2.4
8
20
7
5.5
1.7
7
5.5
1.7
7
5.5
1.7
9
2.7
9
23
7
6
1.9
7
6
1.9
7
6
1.9
10
3.0
10
25
8
6.5
2
8
6.5
2
8
6.5
2
Case B
Surcharge*
100 psf (4.7 kPa)
Above the Wall
Top grid layer must extend an extra
3 ft (0.9 m)
3
0.9
3
8
0
-
-
0
-
-
2
3
1
4
1.2
4
10
0
-
-
0
-
-
3
3
1
5
1.5
5
13
4
3.5
1.1
4
3.5
1.1
4
3.5
1.1
6
1.8
6
15
5
4
1.3
5
4
1.3
5
4
1.3
7
2.1
7
18
6
5
1.6
6
5
1.6
6
5
1.6
8
2.4
8
20
7
5.5
1.7
7
5.5
1.7
7
5.5
1.7
9
2.7
9
23
7
6
1.9
7
6
1.9
7
6
1.9
10
3.0
10
25
8
6.5
2
8
6.5
2
8
6.5
2
Case C
3H:1V Slope
Above the Wall
3
0.9
3
8
0
-
-
0
-
-
2
3
1
4
1.2
4
10
0
-
-
0
-
-
3
3
1
5
1.5
5
13
0
-
-
0
-
-
4
3.5
1.1
6
1.8
6
15
5
4
1.3
5
4
1.3
5
4
1.3
7
2.1
7
18
6
5
1.6
6
5
1.6
6
5
1.6
8
2.4
8
20
7
5.5
1.7
7
5.5
1.7
7
5.5
1.7
9
2.7
9
23
7
6
1.9
7
6
1.9
7
6
1.9
10
3.0
10
25
8
6.5
2
8
6.5
2
9**
6.5
2
Geogrid Chart
AB Classic - 6° (Ref), Patterned Walls - 6° (Ref), AB Fieldstone - 6° (Ref) and AB Vertical - 3° (Ref)
Soil Types: Coarse to medium sands, clean sand and gravel, little or no fines - φ = 36° (Ref)
Soil Types: Uniform to well graded sands, silty sands - φ = 32° (Ref)
Soil Types: Sand-silt-clay mix, clayey sands - φ = 27° (Ref)
Condition Above Wall
Wall Height
Buried Block
# of grid layers
Grid Lengths
# of grid layers
Grid Lengths
# of grid layers
Grid Lengths
ft
m
in
cm
ft
m
ft
m
ft
m
Case A
Level Slope
Above the Wall
3
0.9
3
8
0
-
-
0
-
-
2
3
1
4
1.2
6
15
3
3.5
1.1
3
3.5
1.1
3
3.5
1.1
5
1.5
6
15
4
4
1.3
4
4
1.3
4
4
1.3
6
1.8
6
15
5
5
1.6
5
5
1.6
5
5
1.6
7
2.1
7
18
6
5.5
1.7
6
5.5
1.7
6
5.5
1.7
8
2.4
8
20
7
6.5
2
7
6.5
2
7
6.5
2
9
2.7
9
23
7
7
2.2
7
7
2.2
7
7
2.2
10
3.0
10
25
8
7.5
2.3
8
7.5
2.3
8
7.5
2.3
Case B
Surcharge*
100 psf (4.7 kPa)
Above the Wall
Top grid layer must extend an extra
3 ft (0.9 m)
3
0.9
6
15
2
3
1
2
3
1
2
3
1
4
1.2
6
15
3
3.5
1.1
3
3.5
1.1
3
3.5
1.1
5
1.5
6
15
4
4
1.3
4
4
1.3
4
4
1.3
6
1.8
6
15
5
5
1.6
5
5
1.6
5
5
1.6
7
2.1
7
18
6
5.5
1.7
6
5.5
1.7
6
5.5
1.7
8
2.4
8
20
7
6.5
2
7
6.5
2
7
6.5
2
9
2.7
9
23
7
7
2.2
7
7
2.2
7
7
2.2
10
3.0
10
25
8
7.5
2.3
8
7.5
2.3
9**
7.5
2.3
Case C
3H:1V Slope
Above the Wall
3
0.9
3
8
0
-
-
0
-
-
2
3
1
4
1.2
6
15
3
3.5
1.1
3
3.5
1.1
3
3.5
1.1
5
1.5
6
15
4
4
1.3
4
4
1.3
4
4
1.3
6
1.8
6
15
5
5
1.6
5
5
1.6
5
5
1.6
7
2.1
7
18
6
5.5
1.7
6
5.5
1.7
6
5.5
1.7
8
2.4
8
20
7
6.5
2
7
6.5
2
8**
6.5
2
9
2.7
9
23
7
7
2.2
7
7
2.2
8**
7.5
2.3
10
3.0
10
25
8
7.5
2.3
9**
7.5
2.3
10***
8.5
2.6
No-Fines Chart
Soil Types: Coarse to medium sands, clean sand and gravel, little or no fines φ = 36° (Ref)
Soil Types: Uniform to well graded sands, silty sands φ = 32° (Ref)
Soil Types: Sand-silt-clay mix, clayey sands φ = 27° (Ref)
Depth of No-Fines including wall facing
Condition Above Wall
Wall Height
Buried Block
12°(Ref) AB Stones only of the AB Collection
6° or 3° (Ref) AB and AB Europa Collection Excl. AB Stones
12° (Ref) AB Stones only of the AB Collection
6° or 3° (Ref) AB and AB Europa Collection Excl. AB Stones
12° (Ref) AB Stones only of the AB Collection
6° or 3° (Ref) AB and AB Europa Collection Excl. AB Stones
ft
m
in
cm
ft
m
ft
m
ft
m
ft
m
ft
m
ft
m
Level Slope
Above the Wall
3
0.9
6
15
-
-
-
-
-
-
-
-
-
-
-
-
4
1.2
6
15
-
-
-
-
-
-
-
-
2
0.7
2
0.7
5
1.5
6
15
-
-
2
0.7
-
-
2
0.7
2
0.7
2.5
0.8
6
1.8
6
15
2
0.7
2.5
0.8
2
0.7
2.5
0.8
2.5
0.8
2.5
0.8
7
2.1
7
18
2.5
0.8
2.5
0.8
2.5
0.8
2.5
0.8
2.5
0.8
3
1
8
2.4
8
20
2.5
0.8
3
1
2.5
0.8
3.5
1.1
3.5
1.1
3.5
1.1
9
2.7
9
23
3
1
3.5
1.1
3
1
3.5
1.1
3.5
1.1
4
1.3
10
3.0
10
25
3.5
1.1
4
1.3
3.5
1.1
4
1.3
4
1.3
4.5
1.4
Surcharge*
100 psf (4.7 kPa)
Above the Wall
3
0.9
3
8
-
-
2
0.7
-
-
2
0.7
2
0.7
2.5
0.8
4
1.2
4
10
-
-
2
0.7
2
0.7
2
0.7
2
0.7
3
1
5
1.5
5
13
2
0.7
2.5
0.8
2
0.7
2.5
0.8
2.5
0.8
3.5
1.1
6
1.8
6
15
2
0.7
2.5
0.8
2
0.7
2.5
0.8
3
1
3.5
1.1
7
2.1
7
18
2.5
0.8
3
1
2.5
0.8
3
1
3.5
1.1
4
1.3
8
2.4
8
20
2.5
0.8
3
1
2.5
0.8
3.5
1.1
4
1.3
4.5
1.4
9
2.7
9
23
3
1
3.5
1.1
3
1
4
1.3
4.5
1.4
5
1.6
10
3.0
10
25
3.5
1.1
4
1.3
3.5
1.1
4
1.3
4.5
1.4
5
1.6
3H:1V Slope
Above the Wall
3
0.9
3
8
-
-
-
-
-
-
-
-
2
0.7
2.5
0.8
4
1.2
4
10
-
-
2
0.7
-
-
2
0.7
2.5
0.8
3
1
5
1.5
5
13
-
-
2
0.7
2
0.7
2.5
0.8
3.4
1.1
4
1.3
6
1.8
6
15
2
0.7
2.5
0.8
2
0.7
3
1
4
1.3
5
1.6
7
2.1
7
18
2.5
0.8
3
1
2.5
0.8
3
1
4.5
1.4
5.5
1.7
8
2.4
8
20
2.5
0.8
3
1
2.5
0.8
3.5
1.1
5
1.6
6.5
2
9
2.7
9
23
3
1
3.5
1.1
3
1
4
1.3
5.5
1.7
7
2.2
10
3.0
10
25
3.5
1.1
4
1.3
3.5
1.1
4.5
1.4
6.5
2
8
2.5
All Comments ( 0 )