Centering

Definition

Centering is temporary formwork used for constructing arches, domes, vaults, or other overhead surfaces.

Purpose

The purpose of centering is to provide a stable mold that supports the construction of curved structures until the material sets and can support itself. It ensures the accuracy and integrity of the final structure.

Examples of Use

1. Arch Construction: Using centering to form the shape of an arch until the mortar sets.
2. Dome Building: Supporting the structure of a dome during construction.
3. Vaulted Ceilings: Providing temporary support for the creation of vaulted ceilings.

Related Terms

• Formwork: The molds used to shape concrete and other materials in construction.
• Scaffolding: Temporary structures used to support workers and materials during construction.
• Falsework: Temporary frameworks used to support structures in construction.

Notes

• Centering must be precisely constructed and securely placed to ensure safety and accuracy.
• Removal of centering should only occur after the material has adequately set and gained strength.