Laserfiche WebLink
3. The minimum factor of safety under the northeastern WW FU-04 maximum fill configuration(refuse <br /> elev. 150 ft)is 1.8. The critical failure surface extends from approximately the crest of refuse,through <br /> the refuse mass, and then along the base liner. <br /> 4. The stability analysis assumes the base liner interface shear strengths between the clay and textured <br /> HDPE are a friction angle of 18 degrees and an apparent cohesion of 0 psf and a friction angle of 10 <br /> degrees and an apparent cohesion of 1,000 psf for normal load ranges from 0 to 6,500 psf and from <br /> 6,500 to 17,000 psf,respectively. The base liner interface strength between the cushion geotextile and <br /> the textured HDPE geomembrane is a friction angle of 18 degrees and zero cohesion and a friction <br /> angle of 5 degrees and an apparent cohesion of 1,900 psf for normal load ranges from 0 to 8,000 psf <br /> and from 8,000 to 17,000 psf,respectively. The slope liner interface shear strengths are assumed to be <br /> a friction angle of 7 degrees and no cohesion. <br /> 5. The maximum refuse fill height and slope for WMU FU-04 should be reevaluated based on actual <br /> direct shear test results on the base and slope liner interfaces. <br />