02046nam 2200505 450 991071691220332120211129153239.0(CKB)5470000002527078(OCoLC)1286629899(EXLCZ)99547000000252707820211129j202108 ua 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierCategorizing track mud spot risk by measurement of vertical track deflectionWashington, DC :U.S. Department of Transportation, Federal Railroad Administration, Office of Research, Development and Technology,August 2021.1 online resource (vii, 44 pages) illustrations (chiefly color)"Final Report, August 2021.""DOT/FRA/ORD-21/24.""Authors: Christopher M. Hartsough, Joseph W. Palese, James P. Kelly"--Report documentation page."Performing organization: Harsco Rail"--Report documentation page.Includes bibliographical references (page 43).Railroad tracksUnited StatesRailroad tracksUnited StatesMaintenance and repairBallast (Railroads)United StatesRailroad tracksFoundationsUnited StatesGirdersVibrationTechnical reports.lcgftRailroad tracksRailroad tracksMaintenance and repair.Ballast (Railroads)Railroad tracksFoundationsGirdersVibration.Hartsough Christopher M.1398740Palese Joseph W.Harsco Track Technologies.United States.Federal Railroad Administration.Office of Research, Development and Technology,GPOGPOBOOK9910716912203321Categorizing track mud spot risk by measurement of vertical track deflection3462607UNINA