HIGHWAYS AGENCY DESIGN STANDARDS; GETTING BEHIND THE DESIGN CHARTS

This paper is primarily concerned with the design of the roadbase layers of flexible pavements. The concept of design means design thickness to carry a certain traffic loading and not the design of the actual materials. In other words what thickness of roadbase and surfacing do we need to carry the traffic expected over a certain length of time? Two separate calculations are considered: (1) The calculation of traffic loading; (2) The calculation of thicknesses from the traffic loading obtained from (1). The paper shows the link between the design inputs and design thicknesses. The relationships developed are based on historical evidence, therefore, there is a need to continually monitor factors like the make-up of the commercial vehicle fleet or the development of innovative materials and construction practices or improved information on pavement performance to ensure that the recommended designs provide the best solution. (A)

  • Corporate Authors:

    TRL

    Crowthorne House, Nine Mile Ride
    Wokingham, Berkshire  United Kingdom  RG40 3GA
  • Authors:
    • Nunn, M
  • Publication Date: 1996-5-17

Language

  • English

Media Info

  • Pagination: 4 p.
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00725392
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Sep 26 1996 12:00AM