The Office of Management and Budget is directing federal agencies to streamline procurement, including a 7% cut in spending on contracts by the end of fiscal 2011. OMB also wants agencies to reduce their non-competitive and high-risk contracts by 10% by 2010. OMB Deputy Director for Management Jeffrey Zients told a Senate panel on Oct. 28 that the changes could save $40 billion annually.
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.