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Chapter
Apr 26, 2012

Design Tool for the Structural Stability of Rootwads in Streambanks

Publication: World Environmental and Water Resource Congress 2006: Examining the Confluence of Environmental and Water Concerns

Abstract

This deign tool utilizes measurable and default characteristics of a rootwad, the streambank soil into which it is embedded, and the velocity of adjacent flows to estimate the ability of the rootwad to remain in place during design events. The stability is expressed in terms of factors of safety, for both a variety of the rootwad's individual components (e.g. header log, ballast rocks) and for the entire rootwad. The former allows the spreadsheet design tool to also be used to assess the stability of log vanes. Over 200 rootwads were installed as streambank stabilization projects at 17 sites, with a wide range of conditions, to verify the applicability of the model. The development of this tool was a joint project with USDA-NRCS, PA-DEP, and the Pennsylvania State University.

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Go to World Environmental and Water Resource Congress 2006
World Environmental and Water Resource Congress 2006: Examining the Confluence of Environmental and Water Concerns
Pages: 1 - 16

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Published online: Apr 26, 2012

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Alan D. Wood [email protected]
Natural Resources Conservation Service, USDA, Suite 340, 1 Credit Union, Harrisburg, PA 17110. E-mail: [email protected]

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