The most powerful earthquake to strike Chile in a generation may have left hundreds dead and the South American nation’s infrastructure in tatters, yet the fact the destruction was not far worse is being cited as a testament to Chile’s application of improved building codes and decades of efforts to prepare. Slide Show Photo: AP/Wideworld Nine died and seven were missing—with some believed trapped alive behind a wall that took the load—when the 70-unit Alto Rio Apartment complex in Concepción rolled off its foundations in the Feb. 27 quake. Investigators likely will study the structure’s perfomance for what worked and
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.