Covered by what is claimed to be the world’s tallest tensile structure, the Khan Shatyr Entertainment Center has opened in Astana, Kazakhstan. Photo: Courtesy Nigel Young, Foster + Partners Designed by London-based Foster+Partners, the 150-meter-tall transparent tent is clad in cushions of insulating ethyl tetra fluoro ethylene to shelter Kazakhs from their harsh climate. With a 250 x 230-m elliptical footprint, the tent encloses a park as well as entertainment and leisure facilities. The structure’s design-build team includes Sembol Construction, Antalya, Turkey, and structural engineer Buro Happold, London.
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.