Work on the nation's first public repository for data on disaster and failure events is under way. The National Institute of Standards and Technology expects to launch a pilot website for a broad disaster database early next year. Events stemming from earthquakes, hurricanes, tornadoes, windstorms, community-scale fires, structural fires, storm surges, floods and tsunamis are included in the repository. Photo: Courtesy Nelson Architectural Enegineers Inc. Investigating engineer had to wait five years to sound alarm about flawed truss-joist product. “The effort will support development of standards and technologies for effective collection of data on disasters and failures,” in addition to
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.