Who uses
gravel bags?
construction
companies
waste transfer stations
landfills
public
works depts.
storm water utilities
Appropriate
applications:
catch basin protection
prefilter applications
erosion control
new construction
trash
& debris control
|
|
| Physical
Property |
Test
Method |
Units |
| Functional
Longevity |
Field
Tested |
500
vehicle impacts |
| Effective
Flow Rates |
ASTM
D4491 |
90
gpm/ft2 |
| Recommended
Fill Capacity |
Field
Tested |
1/2
cu.ft./bag |
| Estimated
Fill Weight (3/4" gravel) |
Field
Tested |
70
Lbs. |
| Disposability |
xxx |
Landfill* |
| Outer
& Inner Layers |
Test
Method |
Units |
| Water
Flow Rate |
ASTM
D4491 |
350
gpm/ft2 |
| Grab
Tensile Strength |
ASTM
D 4632 |
50
Lbs |
| Mullen
Burst Strength |
ASTM
D3786 |
500
Lbs |
| UV
Resistance |
ASTM
D4355 |
5
years |
| Middle
Layer |
Test
Method |
Units |
| Water
Flow Rate |
ASTM
D4491 |
115gpm/ft2 |
| Removal
of Hydrocarbons |
ASTM
D2444 |
82%** |
| Absorption
Capacity |
ASTM
C272 |
90% |
| Grab
Tensile Strength |
ASTM
D4632 |
24
Lbs |
* Per California Regional Water
Quality Control Board, Class III
** Middle
Layer - based on maximum liquid absorption of 19.5 fl oz.
Installation
Instructions:
Gravel bags
should be placed approximately 20' to 30' apart on grades less than
2:1, on the downside of the water flow towards the culvert opening.
On grades
greater than 2:1, the bag placement should be 10' to 15' apart for
maximum filtration and water velocity reduction. The first
bag should be placed a minimum of 6" from the culvert opening.
The gravel
bags should be filled to a maximum of 1/2 cu. ft. of 3/4" dia. gravel,
or project specified material with the zipper side facing the road and
the 5" gusset side placed tight against the curb to prevent water from
getting between the curb and the bag.
|
