Spec InterpretationUS 90NW
Nonwoven Geotextiles
US 90NW is a nonwoven needlepunched geotextile made of 100% polypropylene staple filaments. US 90NW resists ultraviolet deterioration, rotting, biological degradation, naturally encountered basics and acids. Polypropylene is stable within a pH range of 2 to 13. US 90NW meets the following M.A.R.V. values except where noted:
| PROPERTY | TEST METHOD | ENGLISH | METRIC |
|---|---|---|---|
| Weight - Typical | ASTM D-5261 | 3.5 oz/sy | 119 g/sm |
| Tensile Strength | ASTM D-4632 | 90 lbs | 401 N |
| Elongation @ Break | ASTM D-4632 | 50% | 50% |
| Mullen Burst* | ASTM D-3786* | 185 psi | 1,275 kPa |
| Puncture Strength* | ASTM D-4833* | 55 lbs | 245 N |
| CBR Puncture | ASTM D-6241 | 265 lbs | 1,179 N |
| Trapezoidal Tear | ASTM D-4533 | 40 lbs | 178 N |
| Apparent Opening Size | ASTM D-4751 | 50 US Sieve | 0.30 mm |
| Permittivity | ASTM D-4491 | 2.00 Sec-1 | 2.00 Sec-1 |
| Water Flow Rate | ASTM D-4491 | 150 g/min/sf | 6,095 l/min/sm |
| UV Resistance @ 500 Hours | ASTM D-4355 | 70% | 70% |
| ROLL SIZE | AREA | WEIGHT |
|---|---|---|
| 12.5' x 360' | 500 sys | 130 lbs |
| 15' x 360' | 600 sys | 155 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.