Geosynthetic Design Parameters: erosion_control_mat
Geosynthetic engineering design parameters per AASHTO M288-21, FHWA NHI-07-092, and GRI standards — geotextiles (woven, nonwoven), geogrids (uniaxial, biaxial, triaxial), geomembranes (HDPE, LLDPE, PVC), GCL, geocomposite drains, and erosion control mats with tensile strength, reduction factors, hydraulic properties, and survivability classes
| product type | application class | application | chemical resistance | expected design life years (years) | notes | reduction factor creep (dimensionless) | reduction factor durability (dimensionless) | reduction factor installation damage (dimensionless) | test methods |
|---|---|---|---|---|---|---|---|---|---|
| erosion_control_mat | erosion_control | erosion_control | PP or coir; biodegradable coir options available for temporary use | 2 | Erosion control mat (ECM) for temporary slope stabilization; open weave allows vegetation establishment; degradable coir mat 2-year design life; PP mat 5-10 years; cover factor C=0.1 vs bare soil; permissible shear stress 96-240 Pa per FHWA | 1 | 1 | 1 | ASTM D6818 (ultimate tensile); ASTM D6475 (light transmittance); ASTM D7322 (nail pullout) |
| erosion_control_mat | permanent_erosion_control | permanent_erosion_control | PP HDPE permanent turf reinforcement mat | 20 | Turf reinforcement mat (TRM) for permanent erosion control; reinforces vegetation root zone; permissible shear stress 240-960 Pa with established vegetation; thickness 8-20 mm; used on channels and steep slopes up to 1V:1H | 1 | 1 | 1.1 | ASTM D6818; ASTM D6475; ASTM D7322 |
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