Reference Surfaces for Bridge Scour Depthsby Mark N. Landers, U.S. Geological Survey, Reston, United States,
David S. Mueller, U.S. Geological Survey, Reston, United States,
Abstract: Depth of scour is measured as the vertical distance between scoured channel geometry and a measurement reference surface. A scour depth measurement can have a wide range depending on the method used to establish the reference surface. A consistent method to establish reference surfaces for bridge scour measurements is needed to facilitate transferability of scour data an scour analyses. This paper describes and evaluates techniques for establishing reference surfaces from which local and contraction scour are measured.
Subject Headings: Scour | Distance measurement | Geometrics | Erosion | Bridge tests | Data analysis | Hydraulic contraction | Bridges
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