A Ladder At Its Core

by Charles Besjak, P.E., (M.ASCE), Director of Structural Engineering; Skidmore, Owings and Merrill LLP, New York, NY,
Gary Haney, S.E., Design Partner; Skidmore, Owings and Merrill LLP, New York, NY,
Preetam Biswas, (M.ASCE), Director of Structural Engineering; Skidmore, Owings and Merrill LLP, New York, NY,
Jing Zhuang, P.E., Associate; Skidmore, Owings and Merrill LLP, New York, NY,
Georgi I. Petrov, P.E., Associate Director; Skidmore, Owings and Merrill LLP, New York, NY,
, S.E.

Serial Information: Civil Engineering—ASCE, 2019, Vol. 89, Issue 10, Pg. 68-71,76-76


Document Type: Feature article

Abstract: The ladder-core system is a novel structural system for supertall towers that was created by SOM for Tower 1 at Shum Yip Upperhills, a mixed-use development in Shenzhen, China. The system features eight megacolumns at the perimeter that form the vertical rails of the ladders on the four corners of the core. Composite coupling beams—the ladder rungs—connect the megacolumns to the interior core, creating a comprehensive lateral system that allows for unobstructed occupant views, simplicity of the floor plates, and inherent structural stability.

Subject Headings: Structural systems | Structural stability | Rail transportation | Composite beams | Coupling | Lateral stability | Floors | Plates | China | Asia

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