Efforts by the Army Corps of Engineers to streamline design costs on similar types of military facilities now being built and planned on bases around the U.S. have industry firms worried the agency is backing away from use of design-build and aims to manage more design work in-house. Critics claim the strategy could hike the government’s level of risk and expense. Practitioners are concerned about what they see as a shifting approach for about 44 types of structures such as barracks and child-development centers now being managed by Corps “centers of standardization” around the U.S. under the military’s construction-reform effort.
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.