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A critical failure surface searching method, using a <br /> random <br /> technique for generating CIRCULAR surfaces has been <br /> specified. <br /> 400 trial surfaces will be generated and analyzed. <br /> 20 Surfaces initiate from each of 20 points equally <br /> spaced <br /> along the ground surface between x = 190 .0 ft <br /> and x = 205 .0 ft <br /> Each surface terminates between x = 315 .0 ft <br /> and x = 320 .0 ft <br /> Unless further limitations were imposed, the minimum <br /> elevation <br /> at which a surface extends is y = 4680 .0 ft <br /> 7 .0 ft line segments define each trial failure <br /> surface. <br /> --------------------- <br /> ANGULAR RESTRICTIONS <br /> --------------------- <br /> The first segment of each failure surface will be <br /> inclined <br /> within the angular range defined by : <br /> Lower angular limit :_ -45. 0 degrees <br /> Upper angular limit :_ -5. 0 degrees <br /> Factors of safety have been calculated by the : <br /> * * * * * SIMPLIFIED BISHOP METHOD * * * * * <br /> The most critical circular failure surface <br /> is specified by 21 coordinate points <br /> 4 <br />