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BUTTRESS SAFETY FACTOR FOR <br />CONFIGURATION OVERALL SLOPE <br />CASE A 1.70 <br />CASE B 1.69 <br />/ S�F�I7B <br />SF =141 <br />B � <br />i <br />SF =1.69/ <br />SAFETY FACTOR <br />STOCKPILE CRITICAL FAILURE DEEP FAILURE <br />CONFIGURATION SURFACE SURFACE <br />CASE A 1.23 1.57 <br />CASE B 1.21 1.71 <br />6 = 115 <br />0 -35.5 <br />C =0 <br />EXISTING FILL SURFACE <br />6 =120 <br />0 =33 <br />C =0 <br />L23(40' <br />X =140 <br />0 =36 <br />C = 30,000 <br />TOE BUTTRESSES <br />FULLY DRAINED <br />SF =1.21(20 STOCKPILE <br />1- 120 <br />0 =33 <br />C =0 <br />CASE A <br />-o <br />T <br />40 CASE B Y = 90 <br />0 =35 <br />C =0 <br />SF= 1.57 (40' STOCKPILE) <br />1.71 (20' STOCKPILE) <br />7 =140 <br />0 =36 <br />C = 30,000 <br />I IIIIII VIII VIII VIII VIII VIII IIII IIII <br />COAL STOCKPILE SURCHARGES 304451 <br />FULLY DRAINED PL )9TE C -5 <br />STABILITY SECTION B -B' <br />ALTERNATE CONFIGURATIONS <br />GEO - HYDRO CONSULTING, INC. <br />PLATE C-5 <br />CASE <br />/ CA. <br />�Ay/ <br />/ <br />SF =1.70 <br />Y = H5 <br />0 =35.5 <br />C = 0 <br />6600 <br />/ S�F�I7B <br />SF =141 <br />B � <br />i <br />SF =1.69/ <br />SAFETY FACTOR <br />STOCKPILE CRITICAL FAILURE DEEP FAILURE <br />CONFIGURATION SURFACE SURFACE <br />CASE A 1.23 1.57 <br />CASE B 1.21 1.71 <br />6 = 115 <br />0 -35.5 <br />C =0 <br />EXISTING FILL SURFACE <br />6 =120 <br />0 =33 <br />C =0 <br />L23(40' <br />X =140 <br />0 =36 <br />C = 30,000 <br />TOE BUTTRESSES <br />FULLY DRAINED <br />SF =1.21(20 STOCKPILE <br />1- 120 <br />0 =33 <br />C =0 <br />CASE A <br />-o <br />T <br />40 CASE B Y = 90 <br />0 =35 <br />C =0 <br />SF= 1.57 (40' STOCKPILE) <br />1.71 (20' STOCKPILE) <br />7 =140 <br />0 =36 <br />C = 30,000 <br />I IIIIII VIII VIII VIII VIII VIII IIII IIII <br />COAL STOCKPILE SURCHARGES 304451 <br />FULLY DRAINED PL )9TE C -5 <br />STABILITY SECTION B -B' <br />ALTERNATE CONFIGURATIONS <br />GEO - HYDRO CONSULTING, INC. <br />PLATE C-5 <br />