girder

/ˈɡɜːdə(r)/ (bre, ipa) · /ˈɡɜːrdər/ (ame, ipa) · /ˈgər-dər/ (ame, mw)

girder — noun

  • girdersingular
  • girdersplural

1. a heavy bar, normally made from steel or concrete, that runs across a building,

1.名詞C1
釋義

a heavy bar, normally made from steel or concrete, that runs across a building, bridge, or other big structure and carries the weight pressing down on it.

例句

Workers slowly lifted a steel girder into place above the new train station.

collocation: steel girder + lifted into place

The old bridge rests on six iron girders that engineers checked every spring.

passive support pattern: structure rests on girders

同義詞
  • beam

    general term; a girder is specifically a large, load-bearing beam

  • joist

    smaller, usually wooden, supports a floor or ceiling rather than a whole bridge

  • rafter

    supports a roof slope, typically wooden and at an angle

文法句型

steel/iron girder

main/supporting girder

用法筆記

Subject is typically a heavy structure (bridge, roof, floor, building); the girder is what holds it up. Often modified by the material (steel, iron, concrete) or position (main, supporting, cross).

常見錯誤

❌The carpenter nailed a small girder between two studs.
✅The carpenter nailed a small joist between two studs.
💡girders are heavy structural members for big spans; small wooden supports inside a wall are joists or studs.