The members of the building team charged with landing what appears to be a winged flying saucer at Florida Polytechnic University's new campus would have had enough on their plate if they were all huddled in the same place, scratching their heads over design architect Santiago Calatrava's futuristic forms. But they weren't. The designers, builders, fabricators and other material and product suppliers were scattered around the globe.The geographic divide made an already difficult job even more so. For the 162,000-sq-ft Innovation,
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.