US 670

Woven Filtration

NTPEP APPROVED - GTX-2013-01-040. US 670 is a woven, calendared, monofilament filtration geotextile made of 100% high-tenacity polypropylene yarns. A Percent Open Area of 4 - 6%, gives it excellent hydraulic properties, while reducing the chances of clogging. US 670 resists ultraviolet and biological deterioration, rotting, naturally encountered basics and acids. Polypropylene is stable within a pH range of 2 to 13. US 670 will satisfy the requirements as outlined in AASHTO M-288-06 for Permanent Erosion Control & Subsurface Drainage Class 2 & 3 (>15% fines) and meets the following M.A.R.V. values except where noted:

Bulkhead Riprap
PROPERTY TEST METHOD ENGLISH METRIC
Weight - Typical ASTM D-5261 5.6 oz/sy 190 g/sm
Tensile Strength ASTM D-4632 370 x 250 lbs 1,646 x 1,112 N
Elongation @ Break ASTM D-4632 15 x 15% 15 x 15%
Wide Width Tensile ASTM D-4595 2,700 x 1,740 lbs/ft (225 x 145 lbs/in) 40 x 26 kN/m
Wide Width Elongation ASTM D-4595 17 x 15% 17 x 15%
Mullen Burst* ASTM D-3786* 450 psi 3,100 kPa
Puncture Strength* ASTM D-4833* 120 lbs 534 N
CBR Puncture ASTM D-6241 950 lbs 4,228 N
Trapezoidal Tear ASTM D-4533 100 x 60 lbs 445 x 267 N
Apparent Opening Size ASTM D-4751 70 US Sieve 0.212 mm
Permittivity ASTM D-4491 0.28 Sec-1 0.28 Sec-1
Water Flow Rate ASTM D-4491 18 g/min/sf 733 l/min/sm
Percent Open Area CW-02215 4-6% 4-6%
UV Resistance @ 500 Hours ASTM D-4355 90% 90%
ROLL SIZE ROLL DIAMETER AREA WEIGHT
12' x 300' 9.0 in 400 sys 200 lbs
6' x 300' 9.0 in 200 sys 105 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.