80 x 80 GMF Mine Grid

Physical Properties	Test Method	*MARV Values (kN/m)**
Ultimate Tensile Strength Machine Direction	ISO 10319	80
Ultimate Tensile Strength Cross Machine Direction	ISO 10319	80
Flame & Electrical Resistance	The material complied with the requirements as per NCB Specification 245:1985 Report No. 2005/616
Elongation at Characteristic Short Term Tensile Strength	ISO 10319	11%
Creep Limited Strength (120yrs)	ISO 13431	55
Aperture Size	Nominal	50 x 50mm
Weight (Average)	Measured	574g/m² estimate

* MARV - Minimum Average Roll Values
The technical values are obtained through testing at Polyfelt's Geosynthetic testing laboratory - an ISO/EIC 17025 accredited testing laboratory for geosynthetics (accreditation no SAMM 207, GAI-LAP 45-02)

General Features

The 80 x 80 Polyfelt is composed of high tenacity polyester geogrids with stable and high quality polymeric coating.
The high strength polyester yarns are coated with a FLAME RESISTANT PVC material.
80 x 80 Grids are inert to biological degradation and are resistant to naturally occurring chemicals, alkalis and acids.
DSI's Mining Products Division is Quality Assured to ISO 9001:2000, Registration No. QAC/R61/0315

PRINTED December 2006: All dimensions, weights, quantities and specifications are those applicable at the time of publication and may be amended from time to time.