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    Stress-Corrosion Tests of Bridge-Cable Wire

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    The National Bureau of Standards received, in August 1940, a number ofsamples of bridge wire taken from thecables of the General U. S. Grant suspensionbridge over the Ohio River at Portsmouth,Ohio. These cables were 71/8 in. indiameter under the wrapping and each wasmade up of 1458 ungalvanized wires ofNo. 8 gage in 3 parallel-wire strands. Thechoice of ungalvanized wire was basedon the previous satisfactory performanceof similar wires in other bridges overperiods of 20 to 50 yr. of service(i).

    Author Information:

    Pollard, R. E.
    Metallurgist, National Bureau of Standards,

    Committee/Subcommittee: B05.06

    DOI: 10.1520/STP42588S