This article presents a personal view of some of the confusion resulting from the bewildering variety of available blacktop specifications. The author is convinced that not all of these many specifications are necessary, and believes that simplification is required to achieve certainty of supply. Fewer materials specifications would greatly improve the specifiers' position, possibly because some specifiers are not aware that some standards are obsolete or that they may be using out-of-date design engineers' drawings. The original 1973 version of British Standards BS 594 (see IRRD 209308) has been improved greatly by its updated 1985 version, (see IRRD 285733 and 285734) which has specified five major changes. Recently, BS 4987 was introduced, (see IRRD 823661 and 828494) incorporating five more improvements. The benefits of rationalising specification by using up-to-date standards are: (1) fewer mistakes and misunderstandings; (2) easier ordering; (3) more rapid order processing; (4) better scheduling of orders, leading to improved overall consistency and better roads. Specifiers must: (1) be in a position to specify correctly by keeping up-to-date with the relevant standards; and (2) vary their specifications to end products. (TRRL)

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  • Corporate Authors:


    LONDON,   United Kingdom  WC1H 0DZ
  • Authors:
    • Venton, J
  • Publication Date: 1990-8


  • English

Media Info

  • Pagination: p. 16,18-9
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00612434
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Aug 31 1991 12:00AM