Construction of the future tallest building in Latin America, the 300-meter-tall Torre Costanera in Santiago, Chile, is on hold “temporarily,” says the developer. The frame now is up 23 stories, reports the structural engineer. Locally based Cencosud SA announced on Jan. 28 it was halting work on the 70-story concrete frame. Work had stopped earlier on the surrounding mixed-use Costanera Center. The developer cites the weak economy as the reason, saying the current work pace is not justifi ed if the development is not “profitable.” Rendering: Pelli Clarke Pelli Chilean job includes 300-m-tall tower. Photo: Rene Lagos Assoc. The frame
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.