PRECASTING LONG SPAN IN SHORT SEGMENTS SHRINKS ERECTION TIME

A 123-ft. pedestrain bridge was erected (in 4 night-shifts) over a busy roadway by leapfrogging a pair of moveable falsework towers under short, cantilevered bridge segments. The structure was designed as 13 segments that could be cast off site, trucked to the work site, and easily installed. Precasting operations were set up in a yard about 2 miles from the construction site where crews cast the bridge sections which were delivered at the bridge site in quantities only sufficient for that nights work. A single set of plastic impregnated plywood forms were used to cast all 13 sections. The first 3 sections were erected by a sling with two loops at each end to lift the sections into place. The remaining segments were erected by threading the completed sections onto in-place bars. Cantilevering and support of the sections are briefly described.

  • Corporate Authors:

    McGraw-Hill, Incorporated

    330 West 42nd Street
    New York, NY  United States  10036
  • Publication Date: 1976-4

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00141068
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 6 1976 12:00AM