Gradation and Layer Thickness Effects on Riprap

by S. R. Abt, Colorado State Univ, Fort Collins, CO, USA,
J. F. Ruff, Colorado State Univ, Fort Collins, CO, USA,
R. J. Wittler, Colorado State Univ, Fort Collins, CO, USA,
D. L. LaGrone, Colorado State Univ, Fort Collins, CO, USA,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract: Since riprap has become a costly and in some areas, scarce commodity, proper design maximizing the level of protection with a minimum rock size and layer thickness is an important goal. The objective of this investigation is to provide criteria for determining rock layer thickness and gradation influence in riprap for overtopping flow conditions. A series of flume tests were conducted in which layer thickness and gradation were evaluated. The results of those tests will be presented.

Subject Headings: Thickness | Rocks | Rock mechanics | Wave overtopping | Flumes | Revetments

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