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TUCSON SOUTH PROPOSED GRAVEL MINE STABILITY ANALYSIS <br /> SLOPE STABILITY ANALYSIS - GRAVEL ROAD/BUILDING <br /> TETRA TECH <br /> (pcf) (psf) (°) <br /> El Claystone Bedrock Mohr-Coulomb 134 100 28 <br /> (peak strength) <br /> C Mud Lens Mohr-Coulomb 126 50 28 <br /> Overburden Mohr-Coulomb 126 50 28 <br /> Sand and Gravel Mohr-Coulomb 137 0 35 <br /> ■ Weathered Claystone Mohr-Coulomb 134 0 14 <br /> Bedrock (residual <br /> strength) <br /> City of Aurora <br /> Waterline Easement <br /> 10 <br /> Applied Load: 3,000 psf Gravel Road Buried Waterline 20 ft 1.53 <br /> 4,969 <br /> ► • <br /> 4,959 <br /> 4,949 <br /> 4,939 <br /> 4,929 <br /> t) 4,919 <br /> 2 <br /> 4,909 <br /> 4,899 <br /> 4,889 <br /> 0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 <br /> Distance (ft) <br /> Figure K-2 - Pseudostatic Analysis with High Phreatic Surface <br /> Horizontal Acceleration Coefficient: 0.067g <br />