Aqueduct Photos 1 2 3 How is an aqueduct constructed? The first story is composed of six arches. The second story consists of ten arches, and the third story carries the water with thirty-five arches. Pont du Gard; Nimes, France Column third story Arch second story first story 4 Arches, especially the arches constructed in the Pont du Gard, were built around wooden frames. The frames were removed upon completion. 5 • An arch was constructed from each end up to the center piece, known as the keystone. • The keystone exerts a force on the adjacent stones so that this one stone at the top held the entire arch together. Thus, it is the key to the structure. keystone 6 • The Romans transported water from far away to cities via aqueducts. • Cities had plumbing, providing private water for the rich and for public baths. Poor neighborhoods shared a public water site. 7 How does an aqueduct work? QuickTime™ and a decompressor are needed to see this picture. Water is heavy stuff. It weighs 8.34 pounds per gallon. The Romans needed a structure strong enough to hold all that water to move it from the mountains into the city. 8 The water was transported in concrete tunnels. The tunnels were underground if possible. Sometimes the tunnel had to go above ground. Tunnels could be build with a shaft. This shaft allowed them to take out dirt and lower supplies to the workers. shaft tunnel 9 water channel The water flowed in a tube on the top of the aqueduct called a water channel. The arches supported the water channel. 10 The channel was lined with concrete. The Romans invented concrete. 11 How did it work? • Gravity made the water flow. • Roman engineers had to construct the aqueduct so the water would flow. • The aqueduct was build to slope down at a .025 meters per kilometer. 12 Comparing Rome to Modern 13 Construct an Aqueduct Game by Nova • http://www.pbs.org/wgbh/nova/lostempires/ roman/aqueductwave.html • http://www.pbs.org/wgbh/nova/lostempires/ roman/aqueductjava.html 14 Photo Credits • • • • https://eee.uci.edu/clients/bjbecker/SpinningWeb/aqueclaudiamapb.jpg http://www.dl.ket.org/latin2/mores/aqua/images/aquetunl.jpg http://www.historyforkids.org/learn/romans/architecture/aqueducts2.htm http://en.wikipedia.org/wiki/Roman_aqueduct 15 Sources http://science.howstuffworks.com/engineering/struct ural/10-roman-engineering-tricks.htm http://videos.howstuffworks.com/sciencechannel/29209-what-the-ancients-knew-romanarchitecture-video.htm http://google-latlong.blogspot.com/2008/11/romanhistory-comes-to-life-in-google.html 16