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plate girder

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noun
  1. an iron or steel beam built up from plates and shapes welded or riveted together, usually including a plate or plates for a web, four angle irons forming two flanges, and a pair of plates to reinforce the flanges.
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Origin of plate girder

First recorded in 1840–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for plate girder

Historical Examples

  • A plate-girder bridge, having girders under rails, was found to be badly rusted.

    The Anatomy of Bridgework

    William Henry Thorpe

  • There are forty-one bridges, consisting of through-truss, plate-girder, and rolled "I" beams.

  • In Pittsburg, some years ago, a plate-girder span collapsed under the weight of a locomotive which it had carried many times.