Chair, Reinforcing

Definition

A reinforcing chair is a metal support made of fabricated wire, designed to hold reinforcing steel (rebar) in place until concrete is poured.

Purpose

The purpose of reinforcing chairs is to ensure that the rebar remains in the correct position within the concrete formwork, providing structural integrity and support for the finished concrete element.

Examples of Use

1. Concrete Slabs: Using chairs to maintain rebar position in slabs for consistent reinforcement.
2. Foundations: Placing rebar on chairs in foundation footings to ensure proper concrete coverage.
3. Beams and Columns: Supporting rebar in vertical and horizontal elements to meet design specifications.

Related Terms

• Rebar (Reinforcing Bar): Steel bars used to reinforce concrete structures.
• Formwork: Temporary molds into which concrete is poured.
• Concrete: A composite material used in construction, composed of cement, aggregate, and water.

Notes

• Proper placement of reinforcing chairs is critical to meeting engineering design requirements and ensuring the structural integrity of concrete elements.
• Different types and sizes of chairs are available to accommodate various rebar diameters and configurations.