Design Guideline: EnviroGrid® Cellular Confinement Vegetated Support

Enviro Grid® Cellular Confinement Design Guide for Vegetated Support
 

Sub Grade CBR
1-2%

Sub Grade CBR
2-4%

Sub Grade CBR
>4%

Fire Trucks & Heavy Applications*

EnviroGrid® EGA 20 Depth

150-200 mm (6” - 8”)

150 mm (6”)

100 mm (4”)

Engineered Base Depth

200 mm (8”)

None

None

Separator Nonwoven Geotextile

Yes

Yes

None

Trucks**

EnviroGrid® EGA 20 Depth

100-150mm (4” - 6”)

100 mm (4”)

100 mm (4”)

Engineered Base Depth

150 mm (6”)

None

None

Separator Nonwoven Geotextile

Yes

None

None

Cars, Light Trucks***

EnviroGrid® EGA 20 Depth

100 mm (4”)

100 mm (4”)

75 mm (3”)

Engineered Base Depth

None

None

None

Separator Nonwoven Geotextile

Yes

Yes

None

Trails, Paths, Patios****

EnviroGrid® EGA 20 Depth

100 mm (4”)

100 mm (4”)

75 mm (3”)

Engineered Base Depth

None

None

None

Separator Nonwoven Geotextile

Yes

Yes

None

*H15 and H20 loading axle loads up to 145Kn (32 kips), up to 36.3 metric tons (80,000 pounds)
**H10 loading axle loads up to 75Kn (16 kips), up to 18.1 metric tons (40,000 pounds)
***Axle loads up to 18 Kn (4 kips), up to 36.3 metric tons (8,000 pounds)
****Lightweight vehicles, pedestrian traffic, livestock