This study examined the usefulness of the computer program COSTUN using two rock railroad tunnels in the Canadian Rocky Mountains as case studies. Evaluation included an attempt to predict construction cost and a comparison of estimates to the bid costs and as-build progress payments with the following conclusions: (1) Program is simple to use: (2) Quantities requiring the greatest estimating experience were profit margins, overhead, advance rates, cost indices and tunnel locations; (3) Program performed well for overall cost and breakdown of estimates; (4) Regional cost factor for projects carried out in remote areas may be difficult; (5) Design algorithms in the program represent the technology of the early 1970s; (6) Program is best used in preliminary cost studies covering route selection, choice of excavation technology and as a check on detailed manual estimates of design engineers.

  • Availability:
  • Corporate Authors:

    Morgan-Grampian (Construction Press) Limited

    Morgan-Grampian House, 30 Calderwood Street
    London SE18 6QH,   England 
  • Authors:
    • Gale, A D
    • Kaiser, P K
  • Publication Date: 1986-3

Media Info

  • Features: Figures; Tables;
  • Pagination: p. 49-52
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00454944
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 31 1988 12:00AM