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Scour in Erodible Rock II: Erosive Power at Bridge Piers

by Steven P. Smith,
George W. Annandale, (M.ASCE),



Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water

Abstract:

Scour depths around bridge piers founded on erodible rock can be determined by making use of the Erodibility Index Method. This method defmes an erosion threshold by relating the erosive power of water and a geomechanical index, known as the Erodibility Index. This paper discusses the parameters that are required to estimate the Erodibility Index. Aspects related to the estimation of the erosive power of water around bridge piers are presented in the companion paper.

Subject Headings: Erosion | Piers | Hydro power | Scour | Rocks | Bridges | Water flow

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