Governments throughout the world are pouring trillions of dollars into their economies to halt their decline and stimulate recovery. It’s still too early to detect results, and in most places construction has ground to a halt. But in Vietnam, a skyscraper continues to rise. Toronto also is relatively unscathed, thanks to pent-up demand for office space, and Calgary’s market is still floating on oil. Photo: Turner Construction Collapsing world economy has failed to halt the rise of Vietnam’s Bitexco Tower. “On a relative basis there is work in Vietnam, whereas work has stopped in India, Russia, Dubai and other places,”
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.