Spec InterpretationUS 205NW
Nonwoven Geotextile
US 205NW is a nonwoven needlepunched geotextile made of 100% polypropylene staple filaments. US 205NW resists ultraviolet and biological deterioration, rotting, naturally encountered basics and acids. Polypropylene is stable within a pH range of 2 to 13. US 205NW will satisfy the requirements as outlined in AASHTO M-288-06 for Class 1 applications and meets the following M.A.R.V. values except where noted:
| PROPERTY | TEST METHOD | ENGLISH | METRIC |
|---|---|---|---|
| Weight - Typical | ASTM D-5261 | 8.0 oz/sy | 271 g/sm |
| Tensile Strength | ASTM D-4632 | 205 lbs | 912 N |
| Elongation @ Break | ASTM D-4632 | 50% | 50% |
| Mullen Burst* | ASTM D-3786* | 350 psi | 2,413 kPa |
| Puncture Strength* | ASTM D-4833* | 130 lbs | 579 N |
| CBR Puncture | ASTM D-6241 | 535 lbs | 2,381 N |
| Trapezoidal Tear | ASTM D-4533 | 85 lbs | 378 N |
| Apparent Opening Size | ASTM D-4751 | 80 US Sieve | 0.180 mm |
| Permittivity | ASTM D-4491 | 1.35 Sec-1 | 1.35 Sec-1 |
| Water Flow Rate | ASTM D-4491 | 90 g/min/sf | 3,657 l/min/sm |
| UV Resistance @ 500 Hours | ASTM D-4355 | 70% | 70% |
| ROLL SIZE | AREA | WEIGHT |
|---|---|---|
| 12.5' x 360' | 500 sys | 250 lbs |
| 15' x 300' | 500 sys | 250 lbs |
* Historical averages (current values not available): Mullen Burst Strength ASTM D3786 is no longer recognized by ASTM D-35 on Geosynthetics as an acceptable test method. Puncture Strength ASTM D4833 is not recognized by AASHTO M288 and has been replaced with CBR Puncture ASTM D6241.