Catenary arch

A catenary arch is a curved structure shaped by the natural form a flexible chain or cable takes when hanging under its own weight, called a catenary curve. When this shape is inverted, it creates a strong arch that efficiently distributes forces, allowing it to support weight with minimal material. This principle is used in architecture and engineering, such as in bridges, domes, and arches, because the shape naturally handles compression and tension. The catenary curve is optimal for creating stable, durable structures that carry loads efficiently.