US 840/6 is a woven high tenacity monofilament filtration geotextile made of 100% polypropylene yarns. This product is specifically designed for drainage and filtration applications. This product's Percent Open Area of 6% gives it excellent hydraulic properties and high flow rates, while reducing the chances of clogging. US 840/6 meets the following M.A.R.V. values except where noted:
| PROPERTY |
TEST METHOD |
ENGLISH |
METRIC |
| Tensile Strength |
ASTM D-4632 |
425 x 350 lbs |
1,891 x 1,588 N |
| Elongation @ Break |
ASTM D-4632 |
15% |
15% |
| CBR Puncture |
ASTM D-4833 |
1,340 lbs |
59,638 N |
| Trapezoidal Tear |
ASTM D-4533 |
125 x 145 lbs |
556 x 645 N |
| Apparent Opening Size |
ASTM D-4751 |
40 US Sieve |
0.425 mm |
| Permittivity |
ASTM D-4491 |
0.96 Sec-1 |
0.95 Sec-1 |
| Water Flow Rate |
ASTM D-4491 |
70 g/min/sf |
2,852 l/min/sm |
| Percent Open Area |
CW-02215 |
6% |
6% |
| UV Resistance @ 500 Hours |
ASTM D-4355 |
90% |
90% |
| ROLL SIZE |
AREA |
WEIGHT |
| 15' x 300' |
500 sys |
275 lbs |
Spec Interpretation
