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Ralston Quarry Slope Stability <br /> 1 25 <br /> Ralston Quarry <br /> t80 Slope Stability Analysis <br /> 260 Section A-A' <br /> 240 <br /> v 180 <br /> m <br /> 0 160 <br /> I <br /> Tailings <br /> + 140 - Unit Weight=125 pcf <br /> e Fnction Angle=35" <br /> 0 12 Collu Aum Cohesion=100 psf <br /> Unit Weight=125 pcf <br /> n 100 Fnction Angle=22' <br /> W Cohesion=135 psf80 <br /> 60 <br /> Claystone <br /> 40 Unit Weight= 130 pcf <br /> Friction Angle=20" <br /> Cohesion=1.IX10 psf <br /> 0 <br /> 0 50 100 150 200 250 300 350 400 450 500 550 600 <br /> Distance(feet) <br /> Remedial Measures Because of the apparent stability, historically, of this zone of the <br /> slope and the factor of safety obtained for Zone 2 by slope stability modeling, no further <br /> remedial measures appear necessary at this time. The slope should be observed <br /> periodically for indications of instability or excessive erosion, particularly after heavy <br /> precipitation events. <br /> Job No. 18-3046 GROUND Engineering Consultants, Inc. Page 14 <br />