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<br />Woodward.CIyde Consultants <br /> <br />:,:'. f)\; I) <br />......." V 10..) <br /> <br />IV. STABILITY OF DOWNSTREAM SLOPE <br /> <br />We reviewed the Bureau's evaluation of the stability of <br /> <br />the downstream slope at the maximum section of the dam for <br /> <br />. <br /> <br />steady state conditions by conducting independent stability <br /> <br />. <br /> <br /> <br />parameters were studied utilizing comp, <br /> <br />programs for <br /> <br />analyses. Several failure <br /> <br /> <br />ying strength <br /> <br />circular arc and composite failure <br /> <br />analyses <br /> <br />we used the parameters given in <br /> <br />on <br /> <br />Figure 5. Further, we <br /> <br />conditions <br /> <br />utilizing horizontal force e <br /> <br />factors of zero, 0.025 <br /> <br />and 0.05g. A steady state <br /> <br />that used by the <br /> <br />Bureau was considered to <br /> <br />nd was used in our <br /> <br />analyses. <br /> <br />The results <br /> <br />lyses are recorded on <br /> <br />Figure 5. <br /> <br /> <br />earthquake <br /> <br />. <br /> <br />1 resisting forces divided by <br />t!-greater~h-an--r;5~- -rrf-the------ _. <br /> <br />analysis of <br /> <br /> <br />5) we took into <br /> <br />'smic coefficients in conventional <br /> <br />The document "Earthquake Design and <br /> <br /> <br /> <br />discussed on <br /> <br />eismic coefficient of 0.025 for dams in <br /> <br />Seismic <br /> <br />For this case the ratio of theoretical <br /> <br />resisting forces to theoretical resisting forces was 1.46. We <br /> <br />believe the risk of earthquake induced ground motions adversely <br />affecting the stability of the dam is very low. <br /> <br />- 19 - <br /> <br />.. <br />