President Obama has proposed a $3.8-trillion budget for fiscal year 2011 that would freeze total "non-security" domestic discretionary spending--the category that includes most federal construction programs--and result in cutbacks in most of the key construction accounts. Photo: White House Obama, with OMB Director Peter Orszag (left) and deputy director Rob Nabors, seeks freeze in "non-security" spending Obama's proposal, transmitted to Congress on Feb. 1, does recommend boosting a few construction programs, including the federal-aid highway obligation ceiling. It also proposes a new, $4-billion "National Infrastructure Innovation and Finance Fund," for transportation projects "of regional and national significance." Administration officials have
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.