Although the power market has taken a hit over the past year, not all the news is bad. The Obama administration’s stimulus plan encourages the development of renewable resources and the rebuilding, expansion and modernization of the nation’s power-delivery network. Photo:AEP Wind and other renewable-energy projects gain traction. Photo: SHAW Coal-fired plants face permit obstacles. Related Links: The Top 500 Design Firms: How Long Will the Recession Last? The Top 500 Design Firms Rankings Optimism in Transportation Sector As Stimulus Provides Stability Design Firms Brace as Bottom Falls Out of Building Market Telecommunications Picks Up While Manufacturing Flounders Global Financial
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.