SOM’s new 64-storey Diagonal Tower to be located in the developing commercial and mixed-use Yongsan International Business District in the heart of Seoul, South Korea, exudes a modern take on structural expressionism. The tower progressively addresses the critical issues associated with skyscraper design in an iconic and refined manner. From structural and energy efficiency to reduced construction costs that the tower must meet, SOM have strove to integrate these aspects holistically into the overall aesthetics. More details after the break. Rising to 343 meters, the diagonal structure serves more than visual stimuli. Somewhat similar to Norman Foster’s Hearst Tower in New York, the diagonal megaframe reduces the amount of steel required by over 25% when compared to conventionally framed buildings. In addition the non-linear vertical surface mitigates wind loading and vortices. Primary structural support is achieved via 4 piers at the corners of the building – which in turn opens up the interior lobby and atrium.
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