German architect Ole Scheeren, a partner with the Office for Metropolitan Architecture (OMA), Rotterdam, has unveiled his plan for MahaNakhon, Bangkok’s tallest skyscraper. The 310-m luxury mixed-use tower appears to be carved, with portions set back in seemingly random fashion. It will be primarily residential but also will include a Marriott hotel. The tower is located near a major transportation hub and is the central feature of a $515-million, 37-acre development that will contain public gardens and retail spaces. Construction is slated to begin in late 2009 and be completed in 2012.
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.