Photo by Tim Griffith A network of five shoring and underpinning systems preserved a historic facade, rising 90 ft high in places. Related Links: 2013 Best of the Best Projects Winners Bay Area Stadium Rehab Boosts Seismic Safety A poor seismic safety rating and general deterioration prompted the University of California, Berkeley, to undertake $300 million in renovations for the California Memorial Stadium, built in 1913. Because it is sited above an active fault, engineers treated it as a series of discrete blocks, each capable of accommodating up to 2 ft of vertical and 6 ft of horizontal movement during
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.