Laserfiche WebLink
Ralston Quarry Slope Stability <br /> Ralston Quarry <br /> Slope Stability Analysis <br /> Section C-C'Rernediated <br /> zeo 1.31 <br /> 260 <br /> 240 <br /> ?M <br /> 200 <br /> y leo <br /> v <br /> g 160 <br /> 140 <br /> 4 IN 3 Tatngs <br /> t Unit Weght=125 pcf <br /> i" IN =c Fnction Angle=35' <br /> _ Colluvurn Coneslon=100 ps1 <br /> IN - Unit Wltight=125 pcf <br /> Maw Angle=22' <br /> s0 <br /> _ Cohevon=135 psf <br /> Ctaystone <br /> i0 UM Weight=130 pef <br /> Fnctwn Mgh,=20' <br /> 20 CoheSiVI=1,000 psf <br /> 0 50 I00 IN 200 250 300 3% 1. '00 500 5s0 600 <br /> Distance(feet) <br /> Each stability embankment should be provided with a back drain at the heel of the <br /> excavation to reduce the potential for water to accumulate at the interface between the <br /> tailings and the colluvium. Geotechnical parameters for back drain design are provided <br /> in the Back Drains section of this report. <br /> Job No. 18-3046 GROUND Engineering Consultants, Inc. Page 21 <br />