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Hydraulic Aspects of Grade Control Structures

by David S. Biedenharn, Corps of Engineers, Vicksburg, United States,
Terry N. Waller, Corps of Engineers, Vicksburg, United States,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

This paper describes the function of grade control structures. The primary purpose of a grade control structure is to maintain or establish a desired bed elevation in a channel. Basically this can be accomplished in one of two ways: (1) Force the degradational zone to occur at the structure where nonerodible materials prevent scour of the bed, or (2) Create a backwater condition which reduces the energy of the degradational zone to the point that it is no longer capable of scouring the bed.

Subject Headings: Hydraulic structures | Erosion | Drop structures | Structural control | River and stream beds | Bed materials | Water discharge

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