The need to integrate resilience into building design has moved up the agenda this month among several federal authorities. On Dec. 1, President Obama declared December to be Critical Infrastructure Protection Month. The announce-ment was made as the Dept. of Homeland Security and the National Institute of Building Sciences hosted a summit in Washington, D.C., on high-performance, resilient buildings and related architecture. The summit included both public officials and private industry representatives as well as nine working group sessions. The results of the summit will be published in a report scheduled for release in January.
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.