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girder

[gur-der] /ˈgɜr dər/
noun
1.
a large beam, as of steel, reinforced concrete, or timber, for supporting masonry, joists, purlins, etc.
2.
a principal beam of wood, steel, etc., supporting the ends of joists.
Origin
1605-1615
1605-15; gird1 + -er1
Related forms
girderless, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for girder
  • It is a long time from the first rain to the point when rust has eaten through an iron girder.
  • With the updated seating design, it is no longer possible to get stuck with seating behind a girder.
  • Side view of railings with dimensions for the six-girder and three-girder bridge decks.
  • girder properties can now easily be copied to all girders in a girder line, all girders in a span, and all girders in the bridge.
  • The initial girder size is usually selected based on past experience.
  • Structure types being considered are segmental box girder or steel tied arch.
  • A plate girder bridge is a bridge supported by two or more plate girders.
British Dictionary definitions for girder

girder

/ˈɡɜːdə/
noun
1.
a large beam, esp one made of steel, used in the construction of bridges, buildings, etc
2.
(botany) the structure composed of tissue providing mechanical support for a stem or leaf
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for girder
n.

"main supporting beam that carries flooring," 1610s, agent noun from gird, on notion of something that "holds up" something else. Used of iron bridge supports from 1853.

Online Etymology Dictionary, © 2010 Douglas Harper
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