Photo Courtesy of Qatar 2022 The outside of Al-Gharafa Stadium will consist of colored bands representing the flags of all the countries that have qualified for the 2022 FIFA World Cup. Photo Courtesy of Qatar 2022 Planned features for Al-Khor Stadium include modular building components and state-of-the-art cooling technology. The wealthy Persian Gulf nation of Qatar is spending at least $4 billion of its oil and other resource riches to build leading-edge, environmentally friendly facilities and infrastructure to host the 2022 World Cup soccer tournament. The program involves building nine new stadiums, upgrading three others and constructing related facilities 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.