Spending bills for the fiscal year starting on Oct. 1 are only inching along on Capitol Hill, making a stopgap “continuing resolution” or an omnibus appropriations package increasingly likely. If that happens, it will mean continued headaches for states and contractors trying to plan for the next construction season—let alone beyond then. As of July 13, none of the 12 appropriations bills for fiscal 2011 even had cleared committee in the House or Senate, although the Senate panel had scheduled July 15 votes on three of the measures. Five spending bills had moved through House subcommittees and further subcommittee action
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.