“Engineers should become more involved in research and fundamental knowledge,” says Ian Robertson, a professor of civil engineering at the University of Hawaii at Manoa. In April, he was on the first of seven teams sent by the American Society of Civil Engineers to Japan to analyze the March 11 quake and tsunami. “There is a tendency to just do what’s in the code,” says Robertson, “but in this case the code has been idling. It’s time to bring it up to speed.” Photo by Tom Sawyer The row of bent flagpoles in Sendai (above) and pressure-shattered walls of a
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.