A new urban center is rapidly taking shape in Incheon, a port city 30 miles west of Seoul. Work is under way on 100 buildings across 1,500 acres reclaimed from the sea. The so-called First World apartment complex is currently home to Songdo’s first 7,800 residents. The development’s population is expected to reach 65,000 upon completion in 2014. A convention center, hotel, international school and 100-acre central park have been completed. The construction workforce currently numbers 15,000 and is expected to peak in late 2010 at 25,000. The developer is New Songdo International City Development LLC, a 70/30 partnership of
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.