Girder

Definition

A beam that supports other beams; a very large beam, especially one that is built up from smaller elements. A timber used to support wall beams or joists.

Purpose

Girders provide crucial structural support in buildings and bridges, bearing the load of other beams and distributing weight to vertical supports or foundations.

Examples of Use

• Building Construction: Used to support floors and roofs by carrying the load of joists.
• Bridge Construction: Employed as main horizontal supports spanning large distances.
• Timber Framing: Used in traditional wooden structures to support heavy loads.

Related Terms

• Beam: A horizontal structural element that resists bending.
• Joist: A horizontal member that supports a floor or ceiling.
• Truss: A framework of beams forming a rigid structure.

Notes

Girders can be made from various materials, including steel, wood, and reinforced concrete, each suited to specific structural requirements and design considerations.