TOWED TAMPERS HURT PROFITS? EXAMPLE OF HOW TO ANALYSE

SCIENTIFIC ANALYSIS OF EQUIPMENT COSTS FOR OPERATIONS ON A SPECIFIC JOB MAY GEVE A COMPANY A COMPETITIVE EDGE IN BIDDING. THE EXAMPLE USED HERE IS THE OF COMPACTING MACHINERY FOR A HIGHWAY GRADING JOB ON 2,000,000 CUBIC YARDS OF LEAN CLAY MIXED AT TIMES WITH SAND AND INCLUDING SOME ROCK FRAGMENTS UP TO 12--14 INCHES IN DIAMETER. A MOISTURE CONTENT AVERAGING 5% ABOVE AN OPTIMUM RANGE OF 17% IS ASSUMED, AND THE CUTS AND FILLS ARE ASSUMED TO BE BALANCED. TOW APPROACHES ARE CONSIDERED. ONE HAS TWO OR THREE LARGE- CAPACITY DOZERS TOWING TANDEM SHEEPSFOOT ROLLERS. THE OTHER HAS A RUBBER-TIRED DOZER OR LARGE-CAPACITY MOTOR GRADER WORKING IN COMBINATION WITH A SEPARATE, SINGLE-PURPOSE, LARGE-CAPACITY MOTOR GRADER WORKING IN COMBINATION WITH A SEPARATE, SINGLE-PURPOSE, LARGE-FOOT, TWO-DRUM COMPACTOR THAT FOR THE GIVEN CONDITIONS CAN ACHIEVE COMPACTION IN EXCESS OF 95% IN TWO MACHINE PASSES. MEANS FOR COMPUTING THE OPERATING COSTS WITH EACH APPROACH ARE SHOWN.

• Supplemental Notes:
  • Vol 114, No 3, P 122, 1 PHOT
• Publication Date: 1971-3

Media Info

• Serial:
  • Roads and Streets
  • Publisher: Donnelley (Reuben H) Corporation

Subject/Index Terms

• TRT Terms: Alternatives analysis; Bulldozers; Clay; Compactors; Costs; Grading (Earthwork); Road construction; Sheepsfoot rollers
• Uncontrolled Terms: Compaction equipment; Grading
• Subject Areas: Finance; Highways; Maintenance and Preservation;

Filing Info

• Accession Number: 00218958
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 17 1972 12:00AM