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Scour at bridge foundations on rock / by Keaton, Jeffrey R.(Jeffrey Ray)(CARDINAL)311149; Clopper, Paul E.(CARDINAL)311147; Mishra, Subhendu Kumar.(CARDINAL)311148; United States.Federal Highway Administration.(CARDINAL)139839; American Association of State Highway and Transportation Officials.(CARDINAL)138446; National Cooperative Highway Research Program.(CARDINAL)281856; National Research Council (U.S.).Transportation Research Board.(CARDINAL)141287;
Includes bibliographical references (pages 167-171)."This report provides a methodology for estimating the time rate of scour and the design scour depth for a bridge founded on rock, as well as design and construction guidelines for application of the methodology. It will be of interest to hydraulic, bridge, and geotechnical engineers responsible for designing bridge foundations on rock or maintenance engineers concerned about existing bridges founded on erodible rock."--Foreword.Research sponsored by the American Association of State Highway and Transportation Officials in cooperation with the Federal Highway Administration
Subjects: Technical reports.; Bridges; Engineering geology.; Scour (Hydraulic engineering); Scour at bridges;
Available copies: 1 / Total copies: 1
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Bridge scour and stream instability countermeasures : experience, selection, and design guidance / by Lagasse, Peter F.(Peter Frederick),1937-(CARDINAL)327627; United States.Federal Highway Administration.(CARDINAL)139839; National Highway Institute (U.S.)(CARDINAL)311468;
Includes bibliographical references.Performed by Ayres Associates, for the Federal Highway Administration, National Highway Institute, under contract no.
Subjects: Technical reports.; Bridges; Hydraulic engineering.; Scour at bridges.;
Available copies: 1 / Total copies: 1
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Structure scour evaluation plan for existing structures / by North Carolina.Division of Highways.Interdisciplinary Scour Work Group.;
Subjects: Scour at bridges.; Bridges;
Available copies: 1 / Total copies: 2
On-line resources: Suggest title for digitization;
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Portable instrumentation for real-time measurement of scour at bridges / by Mueller, David S.(CARDINAL)320468; Landers, Mark N.(CARDINAL)320467; United States.Federal Highway Administration.Office of Infrastructure Research and Development.(CARDINAL)286889; Geological Survey (U.S.)(CARDINAL)154385;
Includes bibliographical references (pages 77-79).Final report;Performed by U.S. Geological Survey for Office of Infrastructure Research and Development, FHA, under contract no.
Subjects: Technical reports.; Scour at bridges; Scour at bridges;
Available copies: 1 / Total copies: 1
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Flow-velocity and depth data during peak discharge events at selected bridge crossings in North Carolina, 1964-98 / by Pope, Benjamin F.(CARDINAL)212412; North Carolina.Department of Transportation.(CARDINAL)145570; Geological Survey (U.S.)(CARDINAL)154385;
Includes bibliographical references (page 5).
Subjects: Stream measurements; Scour at bridges;
Available copies: 1 / Total copies: 2
On-line resources: Suggest title for digitization;
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Stream stability at highway structures / by Lagasse, Peter F.(Peter Frederick),1937-(CARDINAL)327627; United States.Federal Highway Administration.(CARDINAL)139839; Ayres Associates.(CARDINAL)328982;
Includes bibliographical references (pages 131-134)."This document provides guidelines for identifying stream instability problems at highway stream crossings and for the selection and design of appropriate countermeasures to mitigate potential damages to bridges and other highway components at stream crossings. It is a metricated update of the version published in 1991 under Contract No. DTFH61-89-C-00003. The HEC-20 manual covers geomorphic and hydraulic factors that affect stream stability and provides a step-by-step analysis procedure for evaluating stream stability problems. Guidelines and criteria for selecting countermeasures for stream instability problems are summarized, and the design of three countermeasures (spurs, guide banks, and check dams) is presented in detail. Conceptual design considerations for many other countermeasures are summarized"--Technical report documentation page.Sponsored by Office of Technology Applications, HTA-22, Federal Highway Administration, and performed by Ayres Associates, formerly Resource Consultants & Engineers, under contract to GKY and Assoc.,
Subjects: Technical reports.; Bridges; Scour at bridges.; Streamflow.;
Available copies: 1 / Total copies: 1
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An experimental study of scour protection alternatives at bridge piers / by Bertoldi, David.(CARDINAL)319123; United States.Federal Highway Administration.(CARDINAL)139839; GKY & Associates.(CARDINAL)284303;
Includes bibliographical references (page 77).Draft report;Sponsored by Office of Engineering and Highway Operations R&D, Federal Highway Administration, under contract no.
Subjects: Technical reports.; Bridges; Riprap.; Scour (Hydraulic engineering); Scour at bridges.;
Available copies: 1 / Total copies: 1
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Evaluation of pier-scour equations for coarse-bed streams / by Chase, Katherine J.(CARDINAL)278157,author; Holnbeck, Stephen R.(CARDINAL)278156; Montana.Department of Transportation.(CARDINAL)278316; Geological Survey (U.S.)(CARDINAL)154385;
Includes bibliographical references (page 18).Streambed scour at bridge piers is among the leading causes of bridge failure in the United States. Several pier-scour equations have been developed to calculate potential scour depths at existing and proposed bridges. Because many pier-scour equations are based on data from laboratory flumes and from cohesionless silt- and sand-bottomed streams, they tend to overestimate scour for piers in coarse-bed materials. Several equations have been developed to incorporate the mitigating effects of large particle sizes on pier scour, but further investigations are needed to evaluate how accurately pier-scour depths calculated by these equations match measured field data. This report, prepared in cooperation with the Montana Department of Transportation, describes the evaluation of five pier-scour equations for coarse-bed streams. Pier-scour and associated bridge-geometry, bed-material, and streamflow measurement data at bridges over coarse-bed streams in Montana, Alaska, Maryland, Ohio, and Virginia were selected from the Bridge Scour Data Management System. Pier scour calculated using the Simplified Chinese equation, the Froehlich equation, the Froehlich design equation, the HEC-18/Jones equation and the HEC-18/Mueller equation for flood events with approximate recurrence intervals of less than 2 to 100 years were compared to 42 pier-scour measurements. Comparison of results showed that pier-scour depths calculated with the HEC-18/Mueller equation were seldom smaller than measured pier-scour depths. In addition, pier-scour depths calculated using the HEC-18/Mueller equation were closer to measured scour than for the other equations that did not underestimate pier scour. However, more data are needed from coarse-bed streams and from less frequent flood events to further evaluate pier-scour equations.
Subjects: River channels.; Scour at bridges;
Available copies: 1 / Total copies: 1
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Boundary conditions for bridge scour analysis / by Overton, Margery F.,1954-(CARDINAL)281491; Grenier, Roger R.(Roger Robert),1966-(CARDINAL)537020; Fisher, John S.(John Stanley),1945-(CARDINAL)201342; North Carolina.Department of Transportation.(CARDINAL)145570; North Carolina State University.Center for Transportation Engineering Studies.(CARDINAL)182954;
Includes bibliographical references (pages 40-42).Final report.Sponsored by the N.C. Dept. of Transportation.
Subjects: Technical reports.; Bridges; Storm surges; Scour at bridges;
Available copies: 5 / Total copies: 6
On-line resources: Suggest title for digitization;
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Determination of unknown subsurface bridge foundations / by Olson, Larry D.(CARDINAL)325398; Aouad, Marwan F.; Jalinoos, Farrokh.(CARDINAL)325397; Liao, Shu-tao.Nondestructive testing of piles.; Rix, Glenn J.Interpretation of pile length from nondestructive tests using artificial neural network.; Yu, Chih-Peng.Determination of pile lengths using flexural waves.; National Cooperative Highway Research Program.(CARDINAL)281856;
Includes bibliographical references.Appendix A. Bridge descriptions -- appendix B. Test results from surface access methods -- appendix C. Test results from borehole access methods -- section D.1. [excerpts from:] Nondestructive testing of piles / by Shu-tao Liao -- section D.2. Interpretation of pile length from nondestructive tests using artificial neural network / by Glenn Rix -- section D.3. Determination of pile lengths using flexural waves / by Chih-Peng Yu -- appendix E. Case histories.Final report.
Subjects: Technical reports.; Bridges; Piling (Civil engineering); Scour at bridges;
Available copies: 1 / Total copies: 1
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