FORMATION OF WASHBOARDS IN GRAVEL HIGHWAYS
EXTENSIVE EXPERIMENTS CONDUCTED BY THE ENGINEERING EXPERIMENT STATION OF THE STATE COLLEGE OF WASHINGTON FROM 1926 TO 1929 SHOW THAT THE USE OF LOW-PRESSURE SHOCK ABSORBERS AND MODERATE VEHICLE SPEED GREATLY DECREASE THE FORMATION OF THESE TROUBLESOME CORRUGATIONS. THE EXPERIMENTS INCLUDED STUDIES WITH LABORATORY MODELS, TESTS ON A CIRCULAR TEST TRACK 175 FEET IN DIAMETER, AND TESTS ON 1.25 MILES OF STRAIGHT HIGHWAY, ESPECIALLY PROVIDED BY THE WASHINGTON STATE HIGHWAY DEPARTMENT. THE TEST CONDITIONS WERE VERY CAREFULLY CONTROLLED THROUGHOUT. THE RESULTS OF THESE TESTS AND EXPERIMENTS WOULD SEEM TO INDICATE THAT THERE IS A POSSIBILITY OF SOLVING THE WASHBOARD PROBLEM, NOT BY ATTACKING IT FROM A MAINTENANCE STANDPOINT, BUT BY CONTROLLING THE CONDITIONS AND CHARACTERISTICS OF THE CAR ITSELF. ALTHOUGH CARS EQUIPPED WITH BALLOON TIRES DID NOT CAUSE CORRUGATIONS, THE PROBLEM IS STILL OF IMPORTANCE BY REASON OF THE MANY TRUCKS AND VEHICLES NOT SO EQUIPPED.
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Supplemental Notes:
- Vol 9, pp 186-208, 23 FIG, 2 TAB. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
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Authors:
- Dana, H J
- Publication Date: 1930
Media Info
- Media Type: Digital/other
- Monograph Title: Proceedings of the Ninth Annual Meeting of the Highway Research Board Held at Washington, D.C. December 12-13, 1929
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Serial:
- Highway Research Board Proceedings
- Volume: 9
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Corrugations (Defects); Deformation; Gravel roads; Pavements; Shock absorbers; Speed; Tires; Vehicles
- Old TRIS Terms: Washboarding
- Subject Areas: Highways; Pavements; Vehicles and Equipment;
Filing Info
- Accession Number: 00207153
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Jun 1 1971 12:00AM