1. The Architecture of Ancient Rome
... consisted of boats lain side by side. From the boat bridge, work began on the permanent bridge. It was to be made of wood and supported on stone towers called piers which were to stand in the river. A Cofferdam was a double skinned box made of planks with the space between the inner and ... was nailed to the arches and covered with a layer of earth. The finished road stood over sixty feet above the river. For major or busy bridges sometimes stone went in place of wood. The semicircular arch was usually used for bridges. Aqueducts were like a bridge but built over land and carried pipes ...
- Word Count: 1593
- Approx Pages: 6
- Has Bibliography
- Grade Level: High School