Classification Scheme for Erosion Control Products
Development of a classification System
Thanks to a grant by the Federal Highway Administration and the Indiana Department of Transportation, research was undertaken to develop design guidelines, specifcations, and classification systems for geosynthetic erosion control products. The classification scheme below is proposed for INDOT as a means of organizing and selecting these products.
It is modeled after Texas, Virgina, Maryland, Connecticut, and Wisconsin DOT's as well as several erosion control manufacturers (North American Green, Synthetic Industries, American Excelsior). This classification scheme is merely proposed and is not yet accepted in Indiana. Despite this, it does form the basis of the classifications used on this site.
Classification |
Permissible Velocity (ft/s) |
Permissible Shear (psf) |
A: Temporary Erosion Control Products
These products degrade in 6 months to 5 years. Ultimate resistance depends only on the strength of the vegetation. Includes straw, coconut, excelsior, or straw/coconut blankets as well as PP roving, straw bales and mulches |
A-1 |
0.0 - 4.0 |
0.0 - 1.0 |
A-2 |
4.0 - 7.0 |
1.0 - 2.0 |
A: Permanant Erosion Control Products
These products do not degrade. Products are stabilzed with carbon black or other additive. Ultimate resistance depends on the geosynthetic and the strength of the vegetation. Includes TRMs and ECRMs(i.e. 3-D nylon mesh, 3-D extruded monofilaments, polyoefin fibers) |
B-1 |
4.0 - 7.0 |
1.0 - 2.0 |
B-2 |
7.0 - 13.0 |
2.0 - 5.0 |
The authors, sponsors, and Purdue University claim no liability for the accuracy of the material found on this server.
If you experience problems with this page
or have any comments, email Webmaster
