Continuous High Chair

Definition

A continuous high chair is a rigid wire device used to hold steel reinforcements off the bottom of a concrete slab. Unlike single chairs, the continuous high chair is manufactured in strips.

Purpose

The purpose of a continuous high chair is to maintain the correct positioning of reinforcing steel within a concrete slab, ensuring proper concrete cover and structural integrity.

Examples of Use

• Continuous high chairs are used in the construction of large concrete slabs, such as those in industrial floors or parking garages.
• They support reinforcing steel in bridge decks, ensuring the steel remains at the correct height during concrete placement.
• In high-rise buildings, continuous high chairs are used in floor slabs to provide consistent support for reinforcement.

Related Terms

• Rebar Chair: A device used to support reinforcing bars (rebar) in concrete construction.
• Concrete Spacer: A small block or support used to maintain the position of reinforcement within a concrete element.
• Reinforcement Bar (Rebar): Steel bars used to reinforce concrete, improving its tensile strength.

Notes

Using continuous high chairs helps achieve uniform reinforcement placement, which is critical for the structural performance and durability of the concrete element. Proper placement and spacing are essential for effective support.