Abstract
ABSTRACT From careful study of literature, it is found that various methods have been developed for protection of the bed against scour around bridge piers. Use of appurtenances has found limitations as regards effectiveness, structural design and limited experience in their use. A layer of riprap (coarse, non-cohesive and non-movable material) around the pier enhances the ability of bed material around the pier to resist the erosion. On the basis of experimental data collected by the author, Wörman, Chiew and others, a method is proposed for the design of riprap layer to control scour around circular bridge piers.
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