EARTHMOVING ESTIMATING SYSTEMS: POINT WAY TO EFFECTIVE SCRAPER SELECTION

A haulage analysis service is described which is performed by computerized vehicle simulations based on pertinent job data. The computer program performs three main calculation tasks: vehicle time for a given haul road; unit productivity and haul costs based on cycle data; and tire tone-mph data for the subject unit on the haul. Realistic off-the-job production estimates can be made by reference to curves developed through computer simulation of scooper performance over a variety of haul roads. On-the-job production estimates can be made through time studies in which a machine's total trips per hour are determined by calculating unit cycle time. Several complete runs checked with a stopwatch yield an average. Individual time cycles such as load time, delay time and wait time are utilized to evaluate spread balance and job efficiency. Four examples of scraper evaluation and selection are detailed.

  • Corporate Authors:

    McGraw-Hill, Incorporated

    330 West 42nd Street
    New York, NY  United States  10036
  • Publication Date: 1975-12

Media Info

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Filing Info

  • Accession Number: 00129378
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 10 1976 12:00AM