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VOLUME 1 <br />ISSUE 2 <br />JULY 2013 <br /> <br />Introduction……………………………………….….. 1 <br />Predicting Wave Runup on Dam Slopes ……...…2 <br />Design of Riprap for Slope Protection against Wave Action ……………7 <br />Design Considerations for Outlet Works Air Vents…………………. .....12 <br /> <br />1 <br /> <br />A QUARTERLY PUBLICAT ION FOR WESTERN DAM ENGINEERS <br />Valuable Low-Cost Reference: <br />The Embankment Dam Reference Toolbox provides a <br />comprehensive collection of design standards and <br />references for dam engineering available from ASDSO. <br /> <br />Upcoming ASDSO Webinar Dam Safety Training: <br />Hydraulic Design of Labyrinth Weirs, by Blake P. Tullis, Ph.D., <br /> and Brian Crookston. August 20, 2013 <br />Stability Evaluations of Concrete Dams, by Guy S. Lund, P.E., <br /> and Robert Kline, Jr., P.E. October 8, 2013 <br />ASDSO Training Website Link <br /> <br /> <br />An error was found in Issue 01 of this publication. Please note the <br />following correction to the article titled “Simple Steps to Siphoning”: <br />Hmax must be greater than the value of (DCE-RWS), Hmax>(DCE-RWS) <br />The corrected Issue 01 can be found via the following link: <br /> Western Dam Tech Note Issue 01 <br />In this issue of the Western Dam Engineering <br />Technical Note we present articles on the importance <br />of protecting dams against the erosive action of <br />waves and also discuss how to protect conduits from <br />cavitation damage through air venting. This quarterly <br />newsletter is meant as an educational resource for <br />civil engineers who practice primarily in rural areas of <br />the western United States. This publication focuses on <br />technical articles specific to the design, inspection, <br />safety, and construction of small dams. It provides <br />general information. The reader is encouraged to use <br />the references cited and engage other technical <br />experts as appropriate. <br /> <br /> The Western Dam Engineering Technical <br /> Note is sponsored by the following <br /> agencies: <br />S Colorado Division of Water Resources <br />S Montana Department of Natural <br />Resources <br />S Wyoming State Engineer’s Office <br /> This news update was compiled, written, <br /> and edited by URS Corporation in Denver, <br /> Colorado <br /> Funding for the News Update has been <br /> provided by the FEMA National Dam Safety <br /> Act Assistance to States grant program. <br /> Article Contributors: <br /> URS Corporation: Max Shih, PhD, PE; <br /> Casey Robertson; Ed Villano, PE; Greg Glunz, <br /> PE Consultant: Hank Falvey, Dr. Ing; <br /> <br /> Editorial Review Board: <br />Michele Lemieux, PE, Montana Dam Safety <br />Program Supervisor; Bill McCormick, PE, PG, <br />Colorado Chief Dam Safety Branch; <br />Mike Hand, PE, Wyoming Dam Safety <br /> Program; Mark Ogden, PE, Association <br /> of State Dam Safety Officials; <br /> Matthew Lindon, PE, Loughlin Water <br /> Associates; and Steve Becker, PE, <br /> Natural Resources Conservation Service <br /> <br />The material in this publication has been prepared in accordance with generally recognized engineering principles and practic es, and is for general information only. The information <br />presented should not be used without first securing competent advice from qualified professionals with respect to its suitability for any general or specific application. No reference made in <br />this publication constitutes an endorsement or warranty thereof by URS Corporation or sponsors of this newsletter. Anyone using the information presented in this newsletter assumes all <br />liability arising from such use.