Loose Riprap Grade Control Structure Designby Charles H. Tate, Jr., US Army Engineer Waterways, Experiment Station, Vicksburg, United States,
Abstract: The Soil Conservation Service has been using loose riprap grade control structures based on the equal energy concept for several years with mixed success. Previous model studies resulted in modifying the design criteria to include a 1:16-exit flare at the downstream end of the structure which resulted in a much longer structure with associated higher construction costs. This study developed a new design criteria for loose riprap drop structures that incorporates recent advances in riprap stability research, numerical backwater codes, and hydraulic model study results.
Subject Headings: Model analysis | Riprap | Drop structures | Hydraulic design | Hydraulic models | Grade control structures | Structural control
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