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® INTERFACE DIRECT SHEAR SUMMARY <br /> the <br /> oilgroup <br /> PROJECT NAME: FORWARD LANDFILL PROJECT NUMBER: 809918 <br /> SAMPLE NO.: INF-1 DATE: 09/13/00 <br /> DESCRIPTION: SANDY CLAY/60 mil.SS TEXTURED HDPE(TEXTURED SIDE UP)/GRANULAR DRAINAGE. <br /> Load,psf. I Peak esidual Strength @ 31%displacement Load,psf. Peak Residual Strength @ 31%displacement <br /> 1,000 310 271 see note#1 and#2 <br /> 3,000 1063 993 see note#1 and#2 <br /> 6,000 2371 1994 see note#1 and#2 <br /> 13,000 4481 3162 see note#1 and#3 <br /> 17,000 11 5728 11 4318 lisee note#1 and#3 <br /> A Peak Stress — Stress @ 31%.displacements. <br /> 8000 <br /> --iNOTE#I: Soil was compacted to 90%of maximum dry <br /> 7000 density at optimum plus 3%water content. <br /> NOTE#2:Sheared and failed within the smooth side of <br /> 6000 the HDPE and the granular drainage material. <br /> LL NOTE#3: Sheared and jailed on soil just above the <br /> a- 5000 interface between the soil and the textured HDPE. <br /> vi <br /> W4000 <br /> a� <br /> W 3000 <br /> x <br /> 2000 - <br /> 1000 <br /> 0 <br /> 0 2000 4000 6000 8000 10000 12000 14000 16000 18000 20000 <br /> NORMAL LOAD,PSF. <br /> &yX9618aa <br />