PROGRAM CARDS FOR A COMPUTER PROGRAM FOR ESTIMATING COSTS OF HARD ROCK TUNNELING (COHART)

A computer performs all logic and computations customarily done by hand in preparation of engineer's estimates or contractor's bids on tunnel-shaft systems. The program described is based on construction methods, work forces and equipment selections corresponding to the current state of the art of tunneling. The program contains logic to permit the estimate costs of complicated tunnel-shaft systems. In any estimate, the program will accommodate a large number of values or changes in the values of the factors that affect costs, such as tunnel shape and size, shaft depth, rock characteristics, and construction method. To provide great flexibility, the user of the program is provided with the option of selecting lining type and thickness, profit and overhead margins and other input data. Suggestions for selecting an appropriate value for these inputs are contained in the report. Complete operating instructions and an illustrative example are presented. (Author)

  • Supplemental Notes:
    • See also PB-193 272. Punched cards $36.00/deck of 3302 cards.
  • Corporate Authors:

    Harza Engineering Company

    150 South Wacker Drive
    Chicago, IL  USA 
  • Authors:
    • WHEBY, F T
    • Cikanek, E M
  • Publication Date: 1970-5

Media Info

  • Pagination: 3302 cards

Subject/Index Terms

Filing Info

  • Accession Number: 00054555
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: Final Rpt
  • Contract Numbers: DOT-FR-9-00003
  • Files: TRIS
  • Created Date: Jun 10 1974 12:00AM