In his Jan. 20 inaugural address, President Barack Obama focused on broad themes, asking his vast audience to �begin again the work of remaking America.� He said the economy needs �action, bold and swift� and then got more specific, talking about building �roads and bridges and electric grids.� That phrase no doubt grabbed the attention of recession-wounded construction officials who hope that their immediate priority, an infrastructure-oriented economic stimulus bill, also will rise to the front of the new President�s agenda. Photo: AP/Wideworld Obama called for �action, bold and swift� to aid economy, citing roads, bridges. Photo: AP/Wideworld Pelosi calls
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.