Understanding the Keystone in Arch Construction - Structural Role Explained #153888 (License: Personal Use)

This schematic illustrates a traditional stone arch composed of wedge-shaped voussoirs, with the central keystone uniquely colored green to denote its pivotal function. The keystone is the final piece placed during construction and locks all other stones into position, enabling the arch to bear compressive loads efficiently. Its precise placement ensures structural integrity and prevents collapse under vertical pressure.

Used in educational materials, architectural textbooks, civil engineering courses, and museum exhibits to explain load distribution in masonry arches; matches user intent for learning foundational structural principles.