Definitionn. a framework of steel bars raised on side supports to bridge over or around something
Last update: June 12, 2015
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Running wheels which enable the end carriages to travel on the longitudinal gantry girders or runway, and the crab or jenny, which carries the hoisting mechanism, and moves across the span on FIG. [Please select]
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The locomotive crane also deserves mention because it was mounted on a gantry high enough to permit material cars to pass under it on the same trestle, thus making it practicable to work two cranes. [Please select]
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