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Inception Point Relationship for Flat-Sloped Stepped Spillways
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: 2009 Reno, Nevada, June 21 - June 24, 2009 096571.
Authors: Sherry L Hunt, Kem C Kadavy
Keywords: Dam rehabilitation, energy dissipation, inception point, hazard classification, RCC, stepped spillway, and flooding.
Many small earthen embankments are faced with hazard classification changes due to urban encroachment. As a result, some embankments have inadequate spillway capacity. To bring the dam into compliance with state and federal dam safety laws, rehabilitation of the dam is often required. RCC stepped spillways are becoming a popular choice for addressing these issues. However, design guidelines for RCC stepped spillways applied to small earthen dams are scarce, especially for spillways with slopes flatter than 2(H):1(V).