The following guide is for general purposes only. Actual product selection and design should be developed using North American Green’s Erosion Control Materials Design Software (ECMDS®).
All unvegetated and vegetated Vmax3 performance values are based on laboratory research utilizing test methods similar to those detailed in ASTM D 6459-00.
| Product | Applications | Limiting Shear Stress lb/ft2 (Pa) Flow Duration |
Permissible Velocity ft/s (m/s) |
Typical Projects | FHWA FP-03 TRM Categories |
||||
| Bare Soil | Vegetated | ||||||||
| 0.5 hr | 50 hr | 0.5 hr | 50 hr | Unvegetated | Vegetated | ||||
| SC250® | 1:1 & Greater Slopes Medium to High Flow Channels 24-Month Vegetation Grow-in Period |
3.0 (144) |
2.5 (120) |
10.0 (480) |
8.0 (373) |
9.5 (2.9) |
15 (4.6) |
Roadside Ditches, Golf Course Swales, Stream Bank Protection | Types 5.A, B and C |
| C350® | 1:1 & Greater Slopes High Flow Channels 36-Month Vegetation Grow-in Period |
3.2 (153) |
3.0 (144) |
12.0 (576) |
10.0 (480) |
10.5 (3.2) |
20 (6.0) |
Drainage Ditches, High Flow Areas, Shoreline Protection | Types 5.A, B and C |
| P550® | 1:1 & Greater Slopes Extreme High Flow Channels 36-Month Vegetation Grow-in Period or When Sparse Vegetation Stand Is Expected |
4.0 (191) |
3.25 (156) |
14.0 (672) |
12.0 (576) |
12.5 (3.8) |
25 (7.6) |
Spillways, Swales, High Flow Drainage Areas, Shoreline Protection | Types 5.A, B and C |