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TRUENVIRONMENTAL, INC. <br /> A Texas Research lntemational Company <br /> wm9 VIeASI <br /> W INTERFACE FRICTION TEST REPORT <br /> tient: Holdrege& Kull TRI Lo #: E2128-56-09 <br /> Log <br /> #: <br /> Forward Landfill Test Method: ASTM D_5321 <br /> Test Date: 6/10-6/13/01 <br /> Tested Interface: Clay Soil vs. Single-Sided Textured Geomembrane vs. Drainage Rock <br /> IP Upper Box: Drainage rock <br /> 20000 -- <br /> 18000 Floating: Single-sided textured geomembrane <br /> s 18000 (textured side to clay) <br /> 14000 <br /> 12000 Lower Box: Clay soil compacted to 99.9 pcf at <br /> 10000• 19.3%moisture content(90%maximum <br /> 5000 dry density at+3%of optimum moisture content <br /> e000 as determined by a modified Proctor test). <br /> 0 <br /> 0 4000 Interface Interface soaked and loading applied <br /> J 2000 Conditioning: for a minimum of 24 hours prior to shear <br /> 0 <br /> 0 5000 10000 15000 20000 25000 Test Condition: Wet <br /> Normal Stress Ipso <br /> �Laeoa Displacement Shear Streee(Unoer Flt) Shearing Rate: 0.04 inches/minute <br /> Trial Number 1 2 3 4 5 <br /> Bearing Slide Resistance(lbs) 12 17 17 28 48 <br /> Normal Stress(psf) 1415 4310 7125 11134 21601 <br /> Large Dlsplacment Shear Stress(psf) 451 1700 2223 3734 6896 <br /> Corrected Shear Stress(psf) 439 1683 2206 3706 6848 <br /> Secant Angle(degrees) 17.2 21.3 17.2 18.4 17.6 <br /> RESULTS: Large Displacement Friction Angle and Y-intercept <br /> RESULTS: <br /> at 3.54n. of Displacement <br /> Regression Friction Angle(degrees): 17.4 <br /> Y-intercept or Regression Adhesion(psf): 123 <br /> Regression Line: Y= 0.313 'X+ 123 <br /> Regression Coefficient(r squared): 0.996 <br /> Notes: 1) The normal stress and shear stress values contain an area correction. Quality Review/Date <br /> 2) The regression line includes the origin. <br /> 3) Sllding occurred alternately along the clay-geomembrane interface and the drainage rock-geomembrane interface. <br /> The testing herein Is basad upon accepted Industry practice as wall as the test method listed. Test results reported herein do not apply <br /> to samples other than those tested. TRI neither accepts responsibility for nor makes claim as to the that use and purpose Of the material. <br /> TRI observes and maintains client confidentiality. TRI limits reproduction of this report,except In fun,without prior approval of TRI. <br /> W 0 <br /> 9063 Bee Caves Road Austin,TX 78733-6201 (512)263-2101 (512)263-2558 1-800-880-TEST <br />