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Definition of plate girder - 1 dictionary result

plate girder

–noun
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.

Origin:
1840–50
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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