As the State Dept. tackles U.S. embassy construction needs around the world, it is moving ahead on a set of new priorities. The department’s Bureau of Overseas Buildings Operations (OBO) has launched a “design excellence” initiative, plans to build greener facilities and seeks to cut into a huge maintenance backlog. Industry firms will be watching for details of how OBO fleshes out its plans. NAMM Adam E. Namm, OBO’s acting director, told an ENR/Construction Users Roundtable forum on June 16 the bureau has 33 facilities under way. That pace continues a wave of 72 projects completed over the past 10
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.