A time study and a man-hour evaluation study were conducted on the performance and productivity of a slipform paving machine and its crew while they were placing a 32-inch high concrete median barrier wall with a 9-inch base. Both barrier and base were placed monolithically in one pass of the machine. The total work time studies (TWTS) was 48.7 hours or approximately five 10-hour shifts. During this time 2,659 feet of the barrier section were placed. Between 5 and 6 ready-mix concrete trucks supplied concrete to the machine in 8 cubic yard loads. Concrete supply was the most serious cause of both major and minor delays. The contractor employed a work force of 16 men whose working hours varied from day to day. It was found that the productive time was 60 percent of TWTS.

Media Info

  • Features: Figures; Tables;
  • Pagination: 7 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00167859
  • Record Type: Publication
  • Report/Paper Numbers: FHWA-DP-EE-803
  • Files: TRIS, USDOT
  • Created Date: Mar 7 1978 12:00AM