""A Treatise on the Equilibrium of Arches"" is a book written by Joseph Gwilt in 1826. The book focuses on the theory of arches and how they maintain their equilibrium. Gwilt uses familiar mathematical principles to demonstrate his theory, making it accessible to readers with a basic understanding of math. The book is divided into several chapters, each of which covers a different aspect of arch equilibrium. Gwilt also includes illustrations and diagrams...