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A Texas Research Intemafional Company <br />• <br />Otent: Notdrege & Kull <br />`-Project: Forward Landfill <br />Test Date: 6/10-6/13/01 <br />TRI Logit: E2128-56-09 <br />Test Method: ASTM D_5321 <br />Tested Interface: Clay Soil vs. Single -Sided Textured Geomembrane vs. Drainage Rock <br />20000 <br />19000 <br />w 16000 <br />Z, 14000 <br />s 12000 <br />10000 <br />E 6000 <br />s <br />6000 <br />0 <br />•p 4000 <br />z <br />-+ 2000 . <br />0 <br />0 5000 10000 15000 20000 75000 <br />Normal Sims$ Ipsrl <br />-taros Dizpbrem 1 shear Suece (Unoer F10 <br />Trial Number <br />Bearing Slide Resistance (lbs) <br />Normal Stress (psf) <br />Large Displacment Shear Stress (psf) <br />Corrected Shear Stress (psf) <br />Secant Angle (degrees) <br />Upper Box: Drainage rock <br />Floating: Single -sided textured geomembrane <br />(textured side to clay) <br />Lower Box: Clay soil compacted to 99.9 pcf at <br />19.3 %. moisture content (90 % maximum <br />dry density at + 3% of optimum moisture content <br />as determined by a modified Proctor test). <br />Interface Interface soaked and loading applied <br />Conditioning: for a minimum of 24 hours prior to shear <br />Test Condition: Wet <br />Shearing Rate: 0.04 inches/minute <br />1 <br />2 <br />3 <br />4 <br />5 <br />12 <br />17 <br />17 <br />28 <br />48 <br />1413 <br />4310 <br />7125 <br />11134 <br />21601 <br />451 <br />1700 <br />2223 <br />3734 <br />6896 <br />439 <br />1683 <br />2206 <br />3706 <br />6848 <br />17.2 <br />21.3 <br />17.2 1 <br />18.4 <br />1 17.6 <br />r <br />ESULTS: Large Displacement Friction Angle and Y -intercept <br />at 3.5 -in. of Displacement <br />Regression Friction Angle (degrees): <br />Y -intercept or Regression Adhesion (psf): <br />Regression Line: <br />Regression Coefficient <br />17.4 <br />123 <br />Y= 0.313 <br />0.996 <br />'Xt 123 <br />Notes: 1) The normal stress and shear stress values contain an area correction. Quality Review/Dale <br />2) The m9ratslon fine Includes the origin. <br />3) SlIding occurred alternately along the clay-geomembrane interface and the drainage rock-geomembrone interface. <br />The testing hereln Is basad upon accepted Industry practice as well as the lest method listed. Test results reported herein do not apply <br />to samples other than "so to -.led. TRI noither accepts responsibility for nor makes claim as to the Gnat use and purpose of the material. <br />TRI observes and maintains client confidentiality. TRI limits reproduction of this report. except In full. without prior approval of TRI. <br />9063 Bee Caves Road Austin. TX 78733-6201 (512) 263-2101 (512) 263-2558 1-800:880•TEST <br />11 <br />