Pulse 05/21/2012 Planning California Tishman Speyer Properties is planning to build 201 Folsom, a high-rise residential project in San Francisco. The project entails building 38- and 43-story towers, containing 671 units, over an 80-ft-tall full-lot podium. The building will contain 701 parking spaces. Arquitectonica is the architect-of-record. Construction is expected to begin in September. The project has been valued at $100 million. Tishman Speyer Properties, 525 Market St., San Francisco, 94105. DR#12-00431001. Iowa DuPont/Danisco is planning to build a cellulosic ethanol plant at West Lincoln Highway and 580th Street in Nevada. The project entails building a biorefinery using corn stover
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.