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TRI/ENVIRONMENTAL, INC. <br /> A Texas Research lntemational Company <br /> tells SeePEP <br /> r <br /> INTERFACE FRICTION TEST REPORT <br /> Client: Holdrege&Kull TRI Log#: E2128-56-09 <br /> Project Forward Landfill Test Method: ASTM 0 5321 <br /> Test Date: 6110-6/12/01 <br /> Tested Interface: GCL vs. Single-Sided Textured Geomembrane vs. Single-Sided Geocomposite <br /> Upper Box: GCL <br /> 20000 <br /> 18000 Floating: Single-sided textured geomembrane <br /> 16000 (textured side to GC:) <br /> h 14000 <br /> 12000 Lower Box: GSB single-sided geocomposite <br /> tas <br /> 10000 (geonet side to geomembrane) <br /> 8000 <br /> soon <br /> 0 <br /> 40DO Interface . Interface soaked and loading applied <br /> 2000 sem- Conditioning: for a minimum of 24 hours prior to shear <br /> 0 <br /> 0 5000 10000 15000 20000 2moo Test Condition: Wet <br /> Normal Stress(psf) <br /> —rAroa 01e01acemaoi snaar sirms(Unna,Ai Shearing Rate: 0.04 inches/minute <br /> w <br /> Trial Number 1 2 3 4 5 <br /> Bearing Slide Resistance(Ibs) 12 17 17 28 48 <br /> Normal Stress(psf) 1409 4304 7331 11568 21423 <br /> Large Displacment Shear Stress(psf) 234 636 1411 1659 3339 <br /> Corrected Shear Stress(psf) 222 619 1394 1631 3291 <br /> Secant Angle(degrees) 9.0 8.2 1 10.8 8.0 1 8.7 <br /> RESULTS: Large Displacement Friction Angle and Y-intercept <br /> at 3.5-in. of Displacement <br /> Regression Friction Angle(degrees): 8.6 <br /> Y4ntercept or Regression Adhesion (psf)i: 43 <br /> Regression Line: Y= 0.151 'X+ 43 <br /> Regression Coefficient(r squared): 0.984 <br /> 4L9/&fes <br /> Notes: 1) The normal stress and shear stress values contain an area correction. Quality Revlew/Date <br /> 2) Sliding occurred at the geocomposite-geomembrane interface. <br /> The testing herein Is based upon accepted industry practice as well as the test method listed. Test results reported homin do not apply <br /> to aamplea other than those tested. TRI neither accepts responsibility for nor makes claim as to the final use and purpose of the material. <br /> TAI observes and maintains client confidentiality. TRI limits reproduction of thi:report,except in full,without prior approval of TRI. <br /> i° 9063 Bee Caves Road Austin,TX 78733-6201 (512)263-2101 (512)263-2556 1-800-880-TEST <br />