Conventional Concrete for Dam Overtopping Protection

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Uplift Pressure EstimatesMean uplift pressure, sharp-edged geometry, sealed cavity,⅛-inch gap (Bureau of Reclamation, 2007)(Note – Uplift pressures <strong>for</strong> vented cavity were lower)
Sources <strong>for</strong> Uplift Problems• Cracks, offsets due to differential settlement• Delamination at joints due to thermal stress• Alkali-silica reaction and concrete spalling• Freeze-thaw damage at concrete surface• Frost heave at slab foundation• Sulfate attack and concrete deterioration• Small, sharp-edged offsets into flow attransverse joints can produce highest uplift
Page 2 and 3: Conventional Concrete Systems• Co
Page 4 and 5: Box Culvert Spillways on DamsMeeks
Page 6 and 7: Uplift Pressures on Slab• Uplift
Page 10 and 11: Differential Settlement• Less lik
Page 12 and 13: Big Sandy Dam, WYFrost Heave
Page 14 and 15: Defensive Design Measures• Waters
Page 16 and 17: Uplift Pressure Failure Sequence►
Page 18 and 19: Case History - ConcreteOvertopping
Page 20 and 21: A. R. Bowman Dam
Page 22 and 23: Overtopping Protection Systems• T
Page 24 and 25: CRCS Overtopping Protection• Rein
Page 26 and 27: CRCS Downstream Toe Detail
Page 28 and 29: CRCS Hydraulic Model Study
Page 30 and 31: CRCS Water Surface Profiles
Page 32 and 33: Structural Design for CRCS• Conti
Page 34: Questions?

Conventional Concrete for Dam Overtopping Protection

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