The House has approved a $59-billion spending measure that includes $32.8 billion to continue the war in Afghanistan, and $2.8 billion for assistance in Haiti, where a Jan. 12 earthquake killed 230,000 people and caused an estimated $11.5 billion in damages. The July 27 House vote is the final congressional action on the package. It next goes to President Obama for his expected signature. The defense portion of the bill includes $649 million for military construction in Afghanistan. The Haiti funding includes $438 million for infrastructure.
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.