the arch theory

The arch theory in architecture explains how arches support weight through their curved shape. When a load presses down on the arch, the shape redirects the force outward along the curve to the supports (or foundations) on either side. This transfer of force distributes weight efficiently, allowing the arch to carry heavy loads without collapsing. The theory highlights how the geometry of the arch is key to its strength and stability, enabling the construction of large, open structures like bridges and aqueducts that can span wide spaces without internal supports.