Many pavilion designers at Expo 2010 Shanghai, the World’s Fair currently under way in China, interpret its “Better City, Better Life” theme as a call for sustainable buildings. The Peru Pavilion is covered in “green” bamboo and clay, while the Japan Pavilion collects light, air and water in its “eco tubes.” But the developers of the Finland Pavilion interpret “sustainable” not only in terms of the materials and systems used in its construction, but also as an integrated process that begins in building information modeling and continues through adaptive reuse. Image: Courtesy Tekla Software Kirnu, Finnish for “giant’s kettle,” evokes
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.