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<br /> <br />1 <br />t Exhibit 1 shows the geometry of the fill area. Since water is <br />being diverted around the fill and the area is normally very dry, <br />a pore pressure ratio of 0.01 will be used. Exhibit 1 also shows <br />the details of modelling the slope, including the coordinates of <br />' the stiff ground and the fill itself. <br />Using standard earthquake charts for the area, the seismic <br />coefficient is 0.04. <br />The printout included in this report uses the parameter of the <br />minimum depth of tallest slice as 0 feet. This means that the <br />program will calculate the stability of any circle which <br />intersects the pile at any depth. This case produced a minimum <br />' factor of safety of 0.787. When this minimum thickness was raised <br />to 5 feet, the factor of safety rose to 0.825. When this <br />thickness was raised to 10 feet, the factor of safety rose to <br />' 0.867. When this thickness was raised to 25 feet, the factor of <br />safety rose to 1.29. In other words, the pile does not want to <br />fail in a massive way, the minimum factor of safety occurs with <br />' circles that barely intersect the slope. This is due to the lack <br />of cohesion in the material. Most fills of this geometric <br />configuration will try to fail with a wedge that goes deep into <br />the fill. <br />1 <br />The printout for the case of a minimum depth of tallest slice = 0 <br />' is enclosed at the end of this report, <br /> <br />1 <br /> <br />1 <br /> <br /> <br />1 <br />