Supertall in Seoul

by Edward J. Roberts, P.E., (M.ASCE), Senior Associate; LERA Consulting Structural Engineers, New York, NY,
Sangho Han, P.E., Senior Associate; LERA Consulting Structural Engineers, New York, NY,
Andrew C. Polimeni, P.E., (M.ASCE), Associate; LERA Consulting Structural Engineers, New York, NY,


Serial Information: Civil Engineering—ASCE, 2018, Vol. 88, Issue 7, Pg. 44-53


Document Type: Feature article

Abstract: The first supertall building in South Korea, the 555 m Lotte World Tower, in Seoul, features a gently curving, tapered shape and a mast, dubbed the “lantern,” that consists of two separate diagrid structures that extend 50 m above the top occupied floor. Although the tapering shape presented significant challenges during design and construction of the 123-story structure, it effectively minimizes the wind loads on the tower.

Subject Headings: Wind loads | Floors | Construction management | Load factors | High-rise buildings | South Korea | Asia | Seoul

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