Definition

Noun: A box girder is a structural beam constructed from boards or plates, forming a hollow, rectangular cross-section. This design provides high strength and rigidity while using less material than a solid beam of equivalent strength.

Usage

The term "box girder" is used primarily in engineering and construction contexts to describe a specific type of support structure. * The bridge's main span is supported by a massive steel box girder. * Engineers chose a box girder design for its excellent torsional stiffness.

Advanced Usage

• "box girder bridge": A bridge whose main load-bearing structure is one or more box girders.
  • The new viaduct is a classic example of a box girder bridge.

Variants and Related Words

• Girder (n): A large iron or steel beam used for building bridges and large buildings.
• I-beam (n): A girder with a cross-section shaped like the letter 'I'.

Synonyms

• Tubular girder
• Hollow girder

Different Meanings

This term is technical and does not have common alternative meanings outside of structural engineering.

Noun

1. a beam built up from boards; has a hollow rectangular cross section