The U.S. Dept. of Energy’s Jeffrey M. Baker, the visionary behind the nation’s newest symbol for sustainability, loves to recount the tale of the dreaded Kobayashi Maru test. For Baker, the fictional test from the “Star Trek” series is an allegory that became a guidepost during his 15-year crusade to develop a replicable model for the design and construction of affordable, ultra-green buildings.
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.