Photo courtesy of Tampa Bay Water Tampa's 120-MGD water-treatment plant is one of the largest U.S. drinking-water projects delivered to date via a DBO mechanism. In Florida last year, one of the largest drinking-water projects in the U.S. was completed via a design-build-operate contract and is now operational. However, despite its success, the project apparently has failed to inspire a trend toward an increased use of DBO elsewhere. Nevertheless, an industry expert believes cash-strapped small utilities may soon be forced to privatize their water-facility production and operations.Veolia Water North America served as construction manager at-risk for a 50-million-gal-per-day expansion of
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.