Photo: Courtesy of SOM The $450-million China World Trade Tower in Beijing’s Central Business District, which opened on Aug. 30, has become the city’s tallest structure at 330 meters. The 81-story high-rise will have 36,421 sq meters of mixed-use space and is LEED Gold registered, says its designer, Skidmore, Owings & Merrill LLP (SOM), Chicago. The project’s energy and conservation strategy includes crystalline walls layered with “fritted glass” and “metal fins” that serve as “vertical sunshades” and maximize daylighting for the building’s interior, says the firm. The tower’s structural engineer was Ove Arup & Partners, HK Ltd.; its mechanical-electrical engineers
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.