Photo courtesy of LADWP The break occurred at a Y-joint, requiring crews to remove and replace 76 ft of the old pipe and added two new, 4,000-lb, 36-in.-diameter butterfly valves. Photo courtesy of LADWP The burst 30-in., riveted steel pipe spilled an estimated 20 million gallons of water and flooded the UCLA campus and Sunset Boulevard. Related Links: Water Pipeline Designed to Surf Seismic Waves AECOM Wins Fight to Oversee $1.6B Miami-Dade Sewer Repairs A week after a 93-yr-old water trunk line rupture in Los Angeles sent an estimated 20 million gallons of water gushing over the UCLA campus and
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.