We would like to commend you for the excellent and timely article titled Engineers Seek Ways to Warn of Failures ‘Waiting to Happen.' One example where full disclosure of information about a failure could have contributed to better understanding of the problems and might prevent similar errors in the future was orthotropic decks failure on the Bronx-Whitestone Bridge (2005) which occurred within one year after their installation on the bridge. Cracking already occurred during testing of the prototype panels for this project, however, refined analysis by experts, having full knowledge of serious fabrication defects of the test panels, predicted a
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.