Composite Beam

Definition

A composite beam is a structural beam composed of two different materials, such as a wood and steel beam or a steel beam and concrete slab, designed to act as a single unit.

Purpose

The purpose of a composite beam is to combine the strengths of different materials to achieve greater structural efficiency and performance. This allows for more flexible and cost-effective design solutions in construction.

Examples of Use

• In bridge construction, composite beams combine steel girders with a concrete deck to enhance load-bearing capacity and durability.
• High-rise buildings use composite beams to reduce weight and improve fire resistance by combining steel with concrete.
• Residential construction might use wood and steel composite beams to span larger distances without additional support.

Related Terms

• Steel Beam: A structural element made entirely of steel.
• Reinforced Concrete: Concrete strengthened with embedded steel bars (rebar).
• Laminated Veneer Lumber (LVL): An engineered wood product that can be used in composite beams.

Notes

Composite beams require precise engineering to ensure that the different materials work together effectively under load conditions. Proper bonding and connection details are crucial for their performance.