Safety analysis of embankment dams and alternative economical design
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This research evaluates cost effective rehabilitation options for an existing earthen dam located in Grayson, Georgia. The case study dam did not meet Georgia dam safety requirements and therefore required an engineered intervention minimizing risk for downstream receptors. The solution implemented included a roller compacted concrete lining on the dam face, which increased stability enough to meet regulatory standards. This work focuses on evaluating alternative design options to determine an effective and cost efficient solution for similar dam rehabilitation. Using numeric modeling, we evaluated the existing dam configuration to confirm that it did not meet dam safety standards. We evaluated the implemented rehabilitation design to show if it improved reliability of the dam structure to meet regulatory standards. Finally, we evaluated an additional design option to determine if other intervention designs would be as robust. An economic evaluation of expected construction costs for engineering design options led to a recommendations for rehabilitation of similar earthen embankment dams.