Renderings Courtesy of 360 Architecture The oculus design by 360 Architecture, with engineer Buro Happold, for the convertible roof of a $1.2-billion multipurpose stadium in Atlanta represents a radical departure from kinetic roofs of other sports facilities.The stadium design also calls for a novel 58-ft-tall "halo" scoreboard hung from the rim of the opening. Construction of the 1.8-million-sq-ft facility for football's Atlanta Falcons began last month, by the Holder Hunt Russell Moody Joint Venture. After the 71,000-seat stadium opens in 2017, the nearby Georgia Dome will be razed.
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.