EXTRUDED SPAN CUTS BRIDGE COSTS IN HALF

The paper reports how a West German contractor slashed in half the engineer's estimate for a 2,479-ft highway bridge with a 436-ft main span by extruding the structure in concrete instead of erecting the bridge as originally specified. The main span, cantilevering 218 ft from each shore to closure, is supported during construction by 1. 4-in. -dia steel tension rod stays that fan down from 82. 7-ft-high, twin steel pylons mounted directly behind each cantilevered portion of the bridge deck. Overall bridge width is 126 ft. Upon completion of the first girder, the forms are shifted laterally to begin extruding the second girder. The extrusion sequence for each girder is identical.

  • Availability:
  • Corporate Authors:

    McGraw-Hill, Incorporated

    330 West 42nd Street
    New York, NY  United States  10036
  • Publication Date: 1977-11

Media Info

  • Pagination: p. 32-40
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00173556
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Jun 28 1978 12:00AM