The staff of Tampa Bay Water, Clearwater, Fla., is recommending awarding a $162.4-million contract to Kiewit Infrastructure Group, Omaha, Neb., to repair and expand the utility’s six-year-old, 15.5-billion-gallon, cracking reservoir. Image courtesy Tampa Bay Water Under its proposal, Kiewit will remove and reclaim the reservoirs existing flat-plate soil cement and soil wedge, remove and replace the geomembrane layer, and add embankment fill, a drainage system and stair-step soil cement around the entire interior face. Related Links: Contract Award Expected in June for Tampa Reservoir Repair Tampa Bay Water OKs Big Repair Bill for Cracking Reservoir Kiewit estimates repairs at roughly
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.