With three projects under construction and three more scheduled to start by the end of the year, officials in Guangzhou, China, are spending nearly $1 billion to prepare the north axis of the city’s center for the 16th Asian Games, which begin on Nov. 12, 2010. Although near-term activity is focused on improving the north axis, which covers 5.9 sq kilometers, the city has even more ambitious long-term plans, valued at $6.5 billion worth of construction, for the adjacent 16.1-sq-kilometer area, called the south axis. Photo: Heller Manus Architects Plans call for a central park crossed by city streets and
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.