Getting stakeholders to agree on a clean-air rule is no easy feat. So it may come as a surprise that the equipment industry is getting behind new federal greenhouse-gas targets for big trucks. Photo: Mike Larson Improved fuel efficiency will help defray the cost of meeting new environmental standards. Related Links: Forecast: A Weak Recovery Checks Inflation Confidence Index: Heads of Major Firms Believe Market Is Nearing Stability Lumber: Chinese Demand Props Up Prices International: Recession Relinquishes Grip On Global Construction Costs Asia: Overseas, Inflation Creeps Back Complete Report One reason for the lack of debate is economics. “The new,
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.