Think big! Engineers have been doing just that for thousands of years, as renowned author-illustrator David Macaulay proves in this five-part miniseries on spectacular structures. The programs cover bridges, domes, skyscrapers, dams, and tunnels-past and present. Along the way, Macaulay highlights the engineering principles and human stories behind some of the most remarkable achievements in the history of building.
Part 4 - Dams :
How does a dam resist the crush of millions of gallons of water?
Host David Macaulay surveys the dam -- the biggest, costliest structure of all -- from Hoover's concrete arch confronting the Colorado River to the Aswan High Dam, a veritable underwater mountain sitting on the Nile riverbed, holding back a lake the size of England.
Program highlights: Egypt's ancient Saad El Kafara, Aswan High Dam, Hoover Dam, Brazil and Paraguay's shared Itaipu Dam, Johnstown, Pennsylvania's South Fork Dam. Program Producer: Judith Dwan Hallet.