2015-12-11_PERMIT FILE - C1981008 (2)

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THE GEOGRID MYTH Woven Geotextiles—why they really work better! For subgrade stabilization applications where weak subgrade conditions exist, geognas are limited In their effectiveness due to their low tensile strength, Inability to separate and provide filtration, expensive mechanical connectors, and high cost In subgrade stabilization applications the product that works best is often a woven geotextlle Woven geotextiles combine the properties of high tensile strength and modulus, and high confinement, in addition to their ability to act as a filler and separator Woven geotextlles can also be searned together to create uniform high strength In all directions In fact, if you look at any subgrade stabilization application, woven geotextlles will always out perform geogrids techrica!ly and economically Geocnds Irichli allow soft subgrade soils to p uric through Miie Woven geotextlles Vert; p,ovide sepa,alim and filtration I A Look at the Facts tells you why! Properties of Mirafi HP Woven Geotextiles Versus Biaxial Geogrids Ar MIRAFI Biaxial Geogrid MIRAFI Biaxial Geogrid Units HP370 Type 1 HP570 Type 2 MD XD MD XD Tensile Strenoth Ultimate lbs/ft 2700 910 1410 4800 1278 2188 5% Strain ibs/ft 1350 620 890 2400 820 1340 2% Sraln lbs/ft 540 300 445 960 380 595 Interaction - Ci 0.8 08 0.95 08 Separatlon/Filtratior Excellent None Excellent Nona L`rese proper res were obtained from publrshed manufacturers' Irteratt re and actual test programs Technical Comparison - When you look at the key product properties required of a geosynthetic for subgrade stabd,zanon applications- -higl� tensile strength and rnoaulus, high confirement, f Itration, separation, and seam strength—HP Geotextlles far exceeo those for geogrids in every category In every category Mirafl HP woven geotextlles exceed the properties of geogrids, otter by a factor of 2 or more. In addition woven geotexfiles provide separation and filtration functions, a d :;an provoe multi -directional strengths in excess of 3000 pounds per foot, none of which are possible with geogrids Economical Comparison - The material cost of the Mirafi HP woven geotexNes are 20 to 50 percent less than that of the geognd alone, they are avail- able In wider roil widths and can be seamed together to reduce overlap requirements Mirafi HP geotextlles save time and money over geogrids any way you look at it' THE BOTTOM LINE - While TC Mlraft manufactures both woven and non -woven geotextlles and geogrids, If you need a geosynthetic product for subgrade stabilization applications, we recommend woven geotextlles every time Page 2.05.3(3)-29 October 2015 (TR -69)