The economy’s dizzying downward spiral has left few unaffected, and contractors that work in the environmental sector are no exception. But firms report the lukewarm environmental market may be starting to heat up, due in part to an infusion of federal funds from the American Recovery and Reinvestment Act (ARRA) and expected increases in federal funding for water, wastewater and Superfund cleanup projects. Photo: MWH Water and wastewater projects are getting more money. Related Links: General Building: Shaky Economy Leaves Firms Unsettled About What Lies Ahead Manufacturing/Industrial Process: Squeeze Is On As Firms Fight For What Little Work Is Available
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.