Contact Us or call (800) 518-2290

Speak to a geotextile expert now!
We answer the phone!

Propex Geotex 311 US Fabric Equivalent is US 80NW

NTPEP APPROVED - GTX-2019-01-292. US 80NW is a nonwoven needlepunched geotextile made of 100% polypropylene staple filaments. US 80NW resists ultraviolet and biological deterioration, rotting, naturally encountered basics and acids. Polypropylene is stable within a pH range of 2 to 13. US 80NW meets the following M.A.R.V. values except where noted:

Geotex® 311 is a polypropylene, staple fiber, needlepunched nonwoven geotextile produced by Propex®, and will meet the following Minimum Average Roll Values (MARV) when tested in accordance with the methods listed below. The fibers are needled to form a stable network that retains dimensional stability relative to each other. The geotextile is resistant to ultraviolet degradation and to biological and chemical environments normally found in soils. Geotex® 311 conforms to the property values listed below. Propex® performs internal Manufacturing Quality Control (MQC) tests that have been accredited by the Geosynthetic Accreditation Institute – Laboratory Accreditation Program (GAI-LAP). This product is NTPEP approved for AASHTO standards. This data sheet for Geotex® 311 is provided for comparison purposes only.

Propex Geotex 311 Test Data

Property Test Method English Metric
Grab Tensile Strength ASTM D-4632 80 lbs 356 N
Elongation @ Break ASTM D-4632 50 % 50 %
CBR Puncture ASTM D-6241 210 lbs 935 N
Trapezoidal Tear ASTM D-4533 30 lbs 134 N
Apparent Opening Size(1,2) ASTM D-4751 50 US Sieve 0.297 mm
Permittivity(1) ASTM D-4491 2.2 Sec⁻¹ 2.2 Sec⁻¹
Water Flow Rate(1) ASTM D-4491 150 g/min/f² 6,112 L/min/m²
UV Resistance @ 500 Hours ASTM D-4355 70 % 70 %
The supplied information is provided as a service to our customers under "Descriptive Fair Use" to show the relationship between our products and the listed manufacturer's products. All values are published on the manufacturer's website per the date listed below. Products are compared using the properties and test methods on US Fabrics' published, website data sheets. As such, not all properties and test methods may be included in this comparison. US Fabrics, its website and products are neither endorsed, nor sponsored by, nor affiliated with the listed manufacturers. All products are registered trademarks of said manufacturers. US Fabrics aims to provide information that is accurate, however does not accept responsibility for any errors or omissions in the information provided on this page or incorporated into it by reference. Please refer to the manufacturer's most recent published data or website to verify accuracy. (1/2021)
Need Help Writing Specifications?
Download our free Guide to Better Geotextile Specifying. ** UPDATED 2024 **
An Expert's Manual for Distributors
Download our free Distributor's Manual on Geosynthetics & Geotextiles. This 49 page manual is packed with useful tips and quick reference materials. ** UPDATED 2024 **
Contractor's Application Guide
Download our free Contractor's Guide for the most effective ways to use geosynthentics. ** UPDATED 2024 **