Production volume requirements, material characteristics, and haul conditions are identified as the three major variables to consider in scraper selection. The amount of material to be moved and the time available to do the job will determine an "optimum" scraper size. The various aspects are considered of loading, hauling, the disdvantages of large scrapers, and amortization of machines. The best means of determining optimum scraper capacity is either a side-by-side on-the-job comparison, or comparison via a computerized study simulating the earthmoving conditions on project. The effect of loading conditions on scraper scraper selection is illustrated. Tandem-powered 4-wheel drive scrapers, the elevating scraper and push-pull scrapers are discussed. Hauling conditions such as length, grades and rolling resistance will affect selection and have an effect on cycle time and cost per yard. The economics of various scraper usage are briefly discussed. Job conditions have an effect on earth moving tire expense. Tires normally represent 30 percent of the total owning and operating cost of scrapers. On tandem-powered scrapers, wear can be reduced by deadstick loading to eliminate wheel spining.

  • Corporate Authors:

    Dun Donnelley Publishing Corporation

    222 South Riverside Plaza
    Chicago, IL  United States  60606
  • Publication Date: 1975-3

Media Info

  • Features: Figures; Photos;
  • Pagination: p. 120-122
  • Serial:
    • Roads and Streets
    • Volume: 118
    • Issue Number: 3
    • Publisher: Donnelley (Reuben H) Corporation

Subject/Index Terms

Filing Info

  • Accession Number: 00097422
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 13 1975 12:00AM