Construction time was saved by Bethlehem Steel Corp in replacing through-truss railroad span with plate-girder span, 147 ft long over Lehigh River; one 100-ton rig with 100-ft boom and 30-ft jib, on solid railroad bed, was used to set cross beams on top of truss span to support pair of longitudinal beams that serve as tracks for lifting trolleys; cross beams range from 30 WF 124, 30-ft long, to 36 WF 300, 46ft long; 8-wheel trolleys were shop-mounted on 14 WF short beams to avoid difficulties of getting trolleys up on track site.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Trusses help erect girders, then girders help demolish trusses


    Additional title:

    Eng News-Rec


    Published in:

    Publication date :

    1965


    Size :

    3 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


    Booms and Trusses

    Jenkins, Christopher H. M. | AIAA | 2006


    Trusses and Cables

    Pai, P.Frank | AIAA | 2007


    LEG CARRIAGE TYPE TRUSSES

    CALLAHAN MICHAEL | European Patent Office | 2020

    Free access

    Apparatus for joining trusses

    Finckenor, Jeffrey | NTRS | 1991


    TRUSSES AND SIMILAR STRUCTURES

    CALLAHAN MICHAEL | European Patent Office | 2017

    Free access