In 1971 a national data bank for roads (NDBR) was established as an experimental service. The objective was to bank materials data and construction experience for re-use. However, the service was not used to the extent expected and the reasons for the failure of an apparently useful idea were investigated. It was found that the originally proposed principle of geomorphological classification for the storage of information was too complicated and, with regard to road construction materials, incorrect. Another system of classification, based on parent rock, climate, relief and land form was developed. It was established, during an experimental period of some eighteen months, that this second approach is unambiguous and meets the requirements of users, who are highway engineers. For these reasons it has been accepted by road authorities and is being applied by the national data bank for roads with success. (a). For the covering abstract, see IRRD abstract no 218081. /TRRL/

  • Availability:
  • Corporate Authors:

    South African Institute of Civil Engineers

    2 Hollard Street
    Johannesburg,   South Africa 
  • Authors:
    • Pells, P
    • Robertson, A
    • Clauss, K A
    • Vail, J W
  • Publication Date: 1975

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 9 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00134337
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • ISBN: 86961 0732
  • Report/Paper Numbers: Conf Paper
  • Files: ITRD, TRIS
  • Created Date: Sep 16 1976 12:00AM