Semicircular Arch Diagram - Structural Engineering Illustration #2099106 (License: Personal Use)

This hand-drawn diagram illustrates a traditional semicircular arch composed of wedge-shaped voussoirs arranged symmetrically around a central axis. A dashed radial line extends from the keystone to the impost, emphasizing load distribution along the arch’s curve. The sketch highlights fundamental principles of masonry arch design used in Roman and medieval architecture.

Used in educational materials, architectural textbooks, or engineering websites to explain arch mechanics, load paths, and historical construction techniques; targets students, architects, and preservationists seeking foundational knowledge.