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Construction

Segmental Arches

Segmental arches are arches with an arc less than a 180-degree Roman arch. They seem to have been popular primarily in the 1700s and 1800s, although they were occasionally built in medieval times — rarely even by the Romans.   What is a Segmental Arch Bridge? The term “segmental arch” is rather a loose; technically […]

Categories
Construction

On Roman Arches

The Roman arch, consisting of one half of a circle, is the typical rounded arch often seen with stone bridges. The Roman arch need not have a thick abutment to resist a horizontal thrust; rather, they start (“spring”) on a flat, horizontal plane. This makes them very easy to build, which is always an advantage […]