They’ve already started recovering the corpses of oil-poisoned dolphins, sea turtles and birds from the troubled waters of the Gulf of Mexico. Another casualty in this slowly unfolding catastrophe is the reputation of the engineering profession—and not just petroleum and oil-drilling platform engineers, who certainly have much to regret about the Deepwater Horizon explosion. The disaster affects the reputation of all engineers. Photo: AP/Wideworld What’s happening now in the Gulf is another failure for a profession already deeply afflicted with an identity crisis and which questions its role in U.S. society. Part of the problem stems from much-publicized disasters of
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.