Professional and prospective architects and engineers will live life in the fast lane as they compete in the second annual Iron Designer Challenge in New York on Thursday, June 9. Patterned after the cooking show Iron Chef, eight teams consisting of three high school students and four professionals will go head to head as they build life-size and freestanding “Portals”—structures that mediate two spaces—in less than three hours. Photo courtesy School of Design and Construction During last year's competition, teams built emergency shelters that could be assembled within hours of a natural disaster. Related Links: Student Teams Strive To Build
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.