Spec InterpretationUS SF40
Spunbond Nonwoven Geotextile
US SF40 is a nonwoven, spunbonded, continuous filament, polypropylene geotextile offering the consistent quality expected of spunbond geotextiles. US SF40 resists ultraviolet and biological deterioration, rotting, naturally encountered basics and acids. Polypropylene is stable within a pH range of 2 to 13. US SF40 meets the following M.A.R.V. values except where noted:
| PROPERTY | TEST METHOD | ENGLISH | METRIC |
|---|---|---|---|
| Tensile Strength | ASTM D-4632 | 130 lbs | 578 N |
| Elongation @ Break | ASTM D-4632 | 50% | 50% |
| Mullen Burst* | ASTM D-3786* | 140 psi | 965 kPa |
| Puncture Strength* | ASTM D-4833* | 41 lbs | 182 N |
| Trapezoidal Tear | ASTM D-4533 | 60 lbs | 267 N |
| Apparent Opening Size | ASTM D-4751 | 60 US Sieve | 0.25 mm |
| Permittivity | ASTM D-4491 | 0.8 Sec-1 | 0.8 Sec-1 |
| Permeability | ASTM D-4491 | 0.04 cm/sec | 0.04 cm/sec |
| Water Flow Rate | ASTM D-4491 | 60 g/min/sf | 2,445 l/min/sm |
| UV Resistance @ 500 Hours | ASTM D-4355 | 70% | 70% |
| ROLL SIZE | AREA | WEIGHT |
|---|---|---|
| 12.5' x 300' | 417 sys | 120 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.