DESIGN OF SHOULDERS FOR FLEXIBLE PAVEMENTS
THE BENEFICIAL EFFECT OF PAVED SHOULDERS HAS BEEN DEMONSTRATED AND REPORTED BY THE HIGHWAY RESEARCH BOARD. SHOULDERS FOR HEAVY DUTY FLEXIBLE PAVEMENTS SHOULD BE PAVED WITH HIGH TYPE SURFACING SUCH AS: HOT PLANT-MIX, ASPHALTIC CONCRETE, OR PENETRATION MACADAM. IF THE PAVEMENT PROPER CONSISTS OF A ROAD-MIX, THE SHOULDER SHOULD PROBABLY BE THE SAME TYPE, OR A BITUMINOUS SURFACE TREATMENT COULD BE USED. THE DURABILITY AND ADEQUACY OF THE SHOULDER PAVEMENT WILL DEPEND ON THE KIND OF SUPPORT THAT IT HAS. ON PRIMARY HIGHWAYS, A SURVEY SHOWED THAT THERE IS A TENDENCY TOWARD THE EMPLOYMENT OF FOUNDATION LAYERS EXTENDING FROM THE DITCH LINE TO DITCH LINE. WITH RESPECT TO THE BASE COURSE WIDTH ON PRIMARY TWO-LANE HIGHWAYS, 18 OUT OF THE 43 STATES REPORTED USING BASE COURSES EXTENDING THE FULL WIDTH OF SECTION, OR FROM DITCH LINE TO DITCH LINE. TWENTY-FIVE STATES REPORTED THE USE OF BITUMINOUS SURFACE COURSE ON THE SHOULDER. THIRTEEN STATES OF THE TWENTY-FIVE REPORTING USING A BITUMINOUS SURFACE TREATMENT ON THE MATERIAL IN PLACE, WHILE NINE USED THE SAME TYPE AND THICKNESS OF SURFACING ON THE SHOULDER AS THEY USE ON THE TRAFFIC LANES. IT WAS STATED THAT FOR SECONDARY ROADS THE SHOULDER PAVEMENT SHOULD CONSIST OF SURFACE TREATMENT OR MIXED-IN-PLACE SURFACE COURSES.
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Supplemental Notes:
- No 151, P 7 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:
- Dent, George H
- Publication Date: 1957
Media Info
- Media Type: Digital/other
- Pagination: 1p
- Monograph Title: Symposium on Highway Shoulders
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Serial:
- Highway Research Board Bulletin
- Issue Number: 151
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Asphalt concrete; Base course (Pavements); Bituminous materials; Flexible pavements; Hot mix asphalt; Paved shoulders; Pavement design; Penetration macadam; Surface treating
- Old TRIS Terms: Bituminous surfacing
- Subject Areas: Design; Highways; Pavements;
Filing Info
- Accession Number: 00203409
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Jul 7 1994 12:00AM