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This paper briefly presents pier-scour depths measured during 1943-94, that are thought to have been affected by consolidated cohesive materials (clay) in Mississippi. MDOT soil reports were available for 29 measured pier-scour depths thought to be affected by clay. The cohesion and friction angles were approximated for the clay, and using the soil borings where clay was overlain by sand and(or) gravel, the top of the clay stratum was approximated in order to determine the net scour through the clay. Eight additional measured pier-scour depths were thought to be affected by clay, but no MDOT soil reports or borings were available. The net pier-scour depth through the clay is a rough approximation where sand and (or) gravel overlie a clay stratum and, therefore, only represents part of the total pier-scour depth. Limited data indicate the pier-scour depth decreases as shear strength of the clay increases.
Additional Publication Details
Pier-scour depths affected by clay in Mississippi
Reston, VA, United States
Number of Pages:
Proceedings of the 1998 International Water Resources Engineering Conference. Part 2 (of 2)