It costs on average $4.01 per sq ft to get a building certified under the U.S. Green Building Council’s Leadership in Energy and Environmental Design rating system for green buildings, according to recent market research. That figure translates to $830 million in LEED-related construction spending from 2000 to 2008, says a study by USGBC and consultant Booz Allen Hamilton. The 52-page “Green Jobs Study” estimates $12.5 billion in LEED-certification-related spending will occur over the next five years, an amount that would sustain 230,000 jobs. In the same period, energy savings are expected to total $6 billion, with $4.8 billion directly
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.