MALONEY STACY David L. Stacy , a civil engineer and co-founder of transportation contractor Stacy & Witbeck Inc., Alameda, Calif., died on Nov. 12 in San Jose, Calif. He was 77. Witbeck founded the company, now No. 212 on ENR’s list of The Top 400 Contractors, in 1981, along with partner Robert Witbeck. Major projects of the firm, which reported $351.2 million in 2008 revenue, include renovation of San Francisco’s cable cars and muncipal trolley system and modifications to California’s Calaveras Dam. Witbeck retired from the firm in 1998 and also was president of the Association of Engineering Construction Employers.
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.