Earthbag Building: The Tools, Tricks and Techniques (Natural Building Series) by Kiffmeyer Donald & Kaki Hunter

Author:Kiffmeyer, Donald & Kaki Hunter [Kiffmeyer, Donald]
Language: eng
Format: mobi
Publisher: New Society Publishers
Published: 2004-05-31T16:00:00+00:00

Heavy wagons and legions of troops could safely cross a bridge constructed of arches without collapsing the structure. Many of these bridges outlasted the Roman Empire, the Dark Ages, Middle Ages, and on into modern times, serving General George Patton during World War II just as they had served Caesar almost two millennia before (Fig. 10.5).

10.5: Built during the Roman Empire, Pont du Gard typifies the use of the keystone arch in bridge building. The lower span is still used as a roadway, while the upper arches functioned as an aqueduct for several centuries.

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