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SOM: diagonal tower - yongsan international business district



Project: Diagonal Tower- Yongsan International Business District
Designed by Skidmore, Owings & Merrill LLP (SOM)
Client: Dreamhub Project Financing Vehicle Co., Ltd.
Project Area: 171 285 m2
Building Height: 343 m
Number of Stories: 64
Location: Seoul, South Korea
Website: www.SOM.com | Home



International firm SOM (skidmore, owings + merril) have sent us images of 'diagonal tower' a development proposal for the yongsan international business district in seoul, korea. the 343-meter high building successfully integrates massing, structure and performance to minimize wind loads, reduce construction costs, provide dramatic views and meet strict energy codes, while maintaining an iconic skyline presence.



The 64-story structure provides over 170 000 square meters of open office space, two double-height sky lobbies with a cafeteria and fitness center, two retail pavilions, a glass multifunctional auditorium and a penthouse executive lounge.



Louvers are positioned at varying angles to reduce glass and provide shading in the summer and to allow direct sunlight to warm the building's interiors during the cold winter months. the exterior wall utilizes three layers of glass instead of the typical two to decrease energy loss through the facade. an integrated active chilled beam system transfers heating and cooling energy using water instead of air, resulting in less consumption and greater environmental comfort.





The diagonal megaframe structure defines the form and reduces the amount of steel by 25 percent over a conventionally framed building.the prismatic profile cuts wind forces by mitigating the effects of a whirlwind on the leeway side of the edifice.
the tower is supported with four massive piers at the corners allowing the lobby to be entirely free of columns and to be visually connected to the urban plaza across from the yongsan train station.



From the Architects:

A case study in efficiency, SOM’s design of the 343-meter (1,125-foot) tall Diagonal Tower successfully integrates massing, structure, and performance to minimize wind loads, reduce construction costs, provide dramatic views, and meet strict energy codes—all while maintaining an iconic skyline presence.



Located at a prominent corner of the Yongsan International Business District, a new commercial and mixed-use district planned for the center of Seoul, the 64-story building provides more than 170,000 square meters (1,830,000 square feet) of open office space, two double-height sky lobbies with a cafeteria and fitness center, and a penthouse executive lounge. The project also includes two retail pavilions and an ethereal glass multifunctional auditorium; these elements define a pedestrian scale and help knit the tower into the neighborhood.



Sunshades are positioned at varying angles on each building exposure – horizontal, vertical, and diagonal – to reduce glare and provide shading in the summer and to permit direct sunlight to warm the building’s interiors during Seoul’s cold winter months. The exterior wall utilizes three layers of glass instead of the typical two to decrease energy loss through the façade and to meet Seoul Green Guidelines criteria. An integrated active chilled beam system transfers heating and cooling energy using water instead of air, resulting in less energy consumption and greater environmental comfort for building users.



The diagonal megaframe structure defines the building form and reduces the amount of steel by 25% over a conventionally framed building. The variegated building profile also cuts wind forces by mitigating the effects of wind vortices on the leeward side of the building. The entire tower is supported on four massive piers at the building corners, allowing the lobby to be entirely free of columns and to be visually connected to the urban plaza across from the Yongsan Train Station.

Sources:

Diagonal Tower by SOM

SOM: diagonal tower - yongsan international business district

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