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TRUENVIRONMENTAL, INC. <br /> A Texas Research lntemational Company <br /> INTERFACE FRICTION TEST REPORT <br /> dent: Noldr e& Kull TRI L <br /> e9 og#: E2128-56-09 <br /> Project: Forward Landfill Test Method: ASTM D 5321 <br /> Test Dote: 6/10-6/12/01 - <br /> Tested Interface: GCf_vs. Single-Sided Textured Geomembrane vs. Single-Sided Geocomposite <br /> Upper Box: GCL <br /> 14000 Floating: Single-sided textured geomembrane <br /> 12000 (textured side to GC:) <br /> p 10000 <br /> 8000Lower Box: GSE single-sided geocomposite <br /> (goonet side to geomembrane) <br /> !1000 <br /> E <br /> E 4000 <br /> 2000 Interlace Interface soaked and loading applied <br /> Conditioning: for a minimum of 24 hours prior to shear <br /> 0 <br /> 0 5000 10000 1500o 20000 Test Condition: Wet <br /> Norma►stress(psfl <br /> ----Maxi n Show Servs(UOOa(Fir) <br /> Shearing Rate: 0.04 inches/minute <br /> W Trial Number 1 2 3 4 5 <br /> Bearing Slide Resistance(lbs) 12 17 17 28 48 <br /> Normal Stress(psf) 1276 3005 5480 10547 15196 <br /> Maximum Shear Stress(pst) 238 489 1018 1539 2512 <br /> Corrected Shear Stress(psf) 224 472 1001 1511 2464 <br /> Secant Angle(degrees) 10.Q 8.9 10.4 8.2 9.2 <br /> RESULTS: Maximum Friction Angle and Y-intercept <br /> Regression Friction Angle(degrees): 8.8 <br /> Y-Intercept or Regression Adhesion (psf): 32 <br /> Regression Line: Y= 0.155 'X+ 32 <br /> Regression Coefficient(r squared): 0.986 /-� <br /> 'fa0&_ <br /> Quality Review/Date <br /> Notes: 1) The normal stres3 and shear stress values contain an area correction. <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 herein do not apply <br /> to samples other than those tested. TRI neither accepts responsibility for nor makes claim as to the Anal 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 />