As more of the world’s economies show signs of transitioning from recession to recovery, the relatively unscathed global environmental sector appears poised to resume its growth. Most of the markets that were strong before the recession—East Asia, Australia, and Western Europe—have remained active, thanks in part to their projects’ inherent size and scope. “It’s been said that Asia is leading the world out of recession, and that’s probably also true for the water market,” says Dan McCarthy, president and CEO of Overland Park, Kan.-based Black & Veatch’s global water business. Photo: Black & Veatch Asia is leading the recovery with
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.