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1 <br /> <br /> * * * * * SIMPLIFIED BISHOP METHOD * * * * * <br />1' <br /> The most critical circular failure surface <br /> <br />I is specified by 24 coordina te points <br /> Point x-surf y-surf <br /> No. (ft) (ft) <br />1' <br /> 1 187.37 24.74 <br /> 2 189.85 24.41 <br /> 3 192.34 24.22 <br />' 4 194.84 24.19 <br /> 5 197.34 24.29 <br /> 6 199.82 24.55 <br />' 7 202.29 24.94 <br /> 8 204.73 25.48 <br /> 9 207.14 26.17 <br /> 10 209.50 26.99 <br /> 11 211.81 27.94 <br /> 12 214.06 29.03 <br /> 13 216.24 30.25 <br />' 14 218.35 31.60 <br /> 15 220.37 33.06 <br /> 16 222.31 34.65 <br />' 17 224.15 <br />18 225.89 36.34 <br />38.13 <br /> 19 227.52 40.03 <br /> 20 229.04 42.01 <br /> 21 230.44 44.08 <br /> 22 231.72 46.23 <br />. 23 232.87 48.45 <br /> 24 233.56 50.00 <br /> <br /> **** Simplified BISHOP FOS = 1.672 **** <br /> <br /> +++*r+++xx#++xxxxx#eex x+r+x#+ rx#e#r##x#+x#e ##rrxx++++r#*++r+x#+r+r+r <br />' ex xr <br /> ** Out of the 200 surface s generated and analyzed by XSTAHL, '* <br /> ** 11 surfaces were fou nd to have MISLEADING FOS values. ** <br /> +# x# <br /> r#+xrr#+rrr#r#r#r##rrr#+rxrrr rx+x++x++r+r+rr+#++rr+xx++#x+rtat#*+#ex <br /> <br />' The following is a summary of the TEN most critical surfaces <br /> Problem Description Cooley Dragline Mining ~ Fulton Ditc <br />' FOS Circle Center Radius Initial Terminal Resisting <br /> <br />