Laserfiche WebLink
Forward Compost Facility Stormwater Improvements <br />02778 7 HDPE GEOMEMBRANE <br />5. Provide finished product free from blemishes, holes, pin holes, bubbles, blisters, excessive gels, undispersed resins, and/or carbon black, contamination by foreign matter and nicks or cuts on edges. 6. Roll manufactured sheets or panel for shipment. 7. The Geomembrane Manufacturer shall provide results of tests performed using the procedures listed in the following table, as well as certification that the materials meet or exceed the specified values. <br /> Properties for 60 mil Textured Geomembrane <br />Test Test Designation Requirements <br />Sheet Thickness ASTM D5994 60 mils minus 10% for any <br />measurement and the average of all <br />measurements for any roll, not less <br />than 60 mils (does not include <br />textured surface) <br />Asperity GRI - GM No. 12 20 mil (1) and examine for uniformity <br />of texture visually. Grid or “waffle” <br />style texturing is not allowed <br />Sheet Density ASTM D792, Method B or D1505 0.940 – 0.950 g/cm <br />Oxidation Induction Time of <br />Polyolefins <br />ASTM D3895, 200C, 1 atm Minimum 100 minutes <br />Tensile Strength Yield ASTM D6693 Min. 126 lb. Per in. Width <br />Tensile Strength at Break ASTM D6693 Min. 90 lbs per in. Width <br />Elongation at Yield ASTM D6693 Min. 12% <br />Elongation at Break ASTM D6693 Min. 150% <br />Tear Resistance ASTM D1004, Die C Min. 42 lb. <br />Puncture Resistance ASTM D4833 Min. 108 lb. <br />Dimensional Stability (Each <br />Direction) <br />ASTM D1204, 212F 15 min. 2% max. Change <br />Notched Constant Tensile Load ASTM D5397 >200 hours @ 30% of yield stress <br />Low Temperature Brittleness ASTM D746 Procedure B Minus 100F <br />Carbon Black Content ASTM D4218 2 to 3% <br />Carbon Black Dispersion ASTM D5596 For 10 different views: 9 in categories <br />1 or 2 and 1 in Category 3 <br />(1) But not less than the asperity of the geomembrane used for interface shear testing <br /> 2.4 EXTRUDATE ROD OR BEAD <br />A. Meeting the geomembrane manufacturer requirements. <br />B. Made from same resin as the geomembrane. <br />C. Thoroughly disperse additives throughout rod or bead. <br />D. Containing 2 to 3 percent carbon black. <br />E. Free of contamination by moisture or foreign matter.