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3.68 <br /> • <br /> 7,700 Configuration: <br /> Bench Height above El. 7000: 40 ft <br /> Bench Width above El. 7000: 40 ft <br /> 7,500 Bench Height below El. 7000: 70 ft <br /> Bench Width below El. 7000: 30 ft <br /> Bench Face Angle: 90' <br /> 7,300 Intermediate Bench Width: 30 ft <br /> Material Properties: <br /> 7,100 y = 160 pcf <br /> 00 c` = 64.2 psi = 9245 psf <br /> 00 <br /> p V =21.8° <br /> 6,900 <br /> Q <br /> Z <br /> 6,700 <br /> c <br /> O <br /> 4— 6,500 <br /> a) <br /> W 6,300 <br /> 6,100 <br /> 5,900 <br /> 5,700 <br /> -1,200 -700 -200 300 800 1,300 1,800 2,300 <br /> Horizontal Distance ft <br /> Notes: <br /> Morrison Quarry Case 10 <br /> 1.The Factor of Safety(FS)value shown is for the South Quarry �� <br /> critical failure surface. nt11 y, COProposed Benching <br /> Jefferson County, C G F lConsultants Stability Results <br /> L� <br /> Aggregate Industries June 2017 Figure B-9 <br />