Geosynthetic Design Parameters: nonwoven_geotextile
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 | CBR puncture N min (N) | UV resistance pct retained 500hr (%) | apparent opening size mm max (mm) | application | chemical resistance | elongation at break pct min | expected design life years (years) | interface friction angle deg typical (deg) | mass per unit area g per m2 typical (g/m2) | notes | permittivity per s min (1/s) | reduction factor creep (dimensionless) | reduction factor durability (dimensionless) | reduction factor installation damage (dimensionless) | survivability class | tensile strength kN per m min (kN/m) | tensile strength kN per m typical (kN/m) | test methods | thickness mm typical (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| nonwoven_geotextile | drainage#Class_1 | 2,750 | 50 | 0.43 | drainage | Good PP/PE needle-punched | 50 | 25 | 18 | 270 | High-permittivity nonwoven for drainage blanket and lateral flow; permittivity 0.5-3.0 per s typical for needle-punched nonwovens | 0.5 | 1 | 1 | 1.2 | Class_1 | 6.23 | 11.1 | ASTM D4632 ASTM D6241 ASTM D4491 ASTM D4751 ASTM D4355 | 4 |
| nonwoven_geotextile | erosion_control#Class_1 | 2,750 | 50 | 0.43 | erosion_control | Good PP/PE | 50 | 25 | 20 | 200 | AASHTO M288 Class 1 permanent erosion control; permittivity 0.7 per s for under 15 pct fines; woven monofilament erosion control may use Class 2 | 0.7 | 1 | 1 | 1.2 | Class_1 | 6.23 | 11.1 | ASTM D4632 ASTM D6241 ASTM D4491 ASTM D4751 ASTM D4355 | 3 |
| nonwoven_geotextile | erosion_control#Class_2 | 2,200 | 50 | 0.25 | erosion_control | Good PP/PE | 50 | 25 | 16 | 270 | AASHTO M288 Class 2 permanent erosion control; 15-50 pct fines soil; permittivity 0.2 per s | 0.2 | 1 | 1 | 1.2 | Class_2 | 4.89 | 7.12 | ASTM D4632 ASTM D6241 ASTM D4491 ASTM D4751 ASTM D4355 | 3.5 |
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