Meaning & use

plate girder

noun·Advancedtechnical

Last updated

UK/ˈpleɪt ˌɡɜːdə/
US/ˈpleɪt ˌɡɜːrdər/

Meaning

  1. nouncountabletechnical

    A large steel beam built from flat plates welded or riveted together, used to support bridges and heavy buildings.

    Grammar: Countable: one plate girder, two plate girders.

    Patterns

    • a plate girder bridge
    • a steel plate girder

    The new bridge rests on four massive plate girders.

    Engineers chose a plate girder design because the span was too long for a simple rolled beam.

    Each plate girder was lifted into place by a crane at night.

Word forms

pluralplate girders

Common combinations

steel plate girder
The roof is held up by steel plate girders.
plate girder bridge
A plate girder bridge crosses the river near the old mill.
welded plate girder
Welded plate girders are cheaper to make than riveted ones.
span between plate girders
The span between plate girders is about twelve meters.

Synonyms and how they differ

girder
Girder is the general word for any large supporting beam; plate girder names the specific type made from joined plates.
beam
Beam is a broader term for any horizontal support, including wood; a plate girder is always a large built-up steel member.

Word family

girder noun
A large beam that supports part of a structure.
plate noun
A flat piece of metal or other material.

Commonly confused: plate girder or girder?

plate girder vs girder

Girder alone can mean any big support beam, while plate girder refers only to the type assembled from flat steel plates.

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