The rephasing of job sequences to boost production (and cut construction times by 25 percent in a project utilizing massive earthmoving machines, indicates that even after a contract is awarded, re-evaluation of equipment and methods can improve job payoff. Planning called for building a culvert to reroute an existing canal prior to construction of two multi-plate tunnels under the old canal bed. On completion of this, construction would commence on an haul road construction and cutting and filling. Reconsideration determined that installing a diversion pipe across a curve in the canal would enable the culvert and multiplate tunnel to be built simultaneously. Although initial plans did not include the company's already-owned high-capacity machines, reanalysis indicated that a revised approach could slash job time from 37 to 28 months and a decision was made to use the jumbo equipment. Temporary on-grade traffic across a previously restricted roadway permitted work around telephone poles and the beginning of cuts and fills. The building of a 24x290x40-ft. high structural steel haul bridge, and a 120-day settlement during winter are described. Earthmoving was accomplished in 2 stages: first 5 million yd. was completed and the spreads then shut down to permit 12 and 24-ft-wide paving by slipformer; another 8 months of earthwork is scheduled to begin with bottom dumps and loaders and one spread of scrapers. Details are also outlined of the working of the bottom dumps, keeping the roads smooth, the working of the scrapers and wheel dozers, diversion of the canal, and the bridges.

  • Corporate Authors:

    McGraw-Hill, Incorporated

    330 West 42nd Street
    New York, NY  United States  10036
  • Authors:
    • Drossell, M R
  • Publication Date: 1975-10

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00127943
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 21 1976 12:00AM