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Changing Stability Criteria: Effect on Older Dams

by James O. Patrick, Georgia Power Co, Atlanta, GA, USA,
Alan W. Murray, Georgia Power Co, Atlanta, GA, USA,



Document Type: Proceeding Paper

Part of: Waterpower '85

Abstract:

Many of the dams on the Georgia Power Company system were designed and constructed in the early 1900's. Changes that have occurred in stability criteria since construction have created problems with apparent stability. Establishment of a new FERC stability criteria has necessitated reanalysis of all Georgia Power Company licensed projects for stability. Investigations of in-situ conditions were undertaken at projects where inadequate stability results were calculated. The investigations included measurement of uplift and testing of concrete for compressive strength and unit weight. The ability of concrete and concrete/rock bond to withstand tension was investigated. Measures taken to strengthen two dams using post-tensioned anchors are discussed.

Subject Headings: Concrete dams | Strength of materials | Uplifting behavior | Structural strength | Structural safety | Project management | Material tests | Georgia | United States

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