Chengdu Greenland Center

This 1-hour video of a lecture by structural engineer Dennis Poon begins with Poon's talk and is followed by Q&A with Museum Director Carol Willis, whose introduction to the webinar is included after the discussion.

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Architects often strive to create an iconic tower that has a narrative
or symbolic character. Adrian Smith, the design principal for
Chengdu Greenland cited the ice-capped mountains of China’s
Sichuan province as his inspiration for the tower’s faceted form.

Engineering the complex façade and changing floor plate shapes
required an ingenious structural solution. The red pressure-tap
wind-tunnel model in this case, which was built to predict the
performance requirements for the façade, shows the full 101-story
height of the tower zig-zagging in and out as angles. The resulting
shapes of floor plates shift as the tilted columns of the perimeter
wall lean in or out. The computer drawing shows the 3-story belt
truss that works with the core to in an outrigger system to stabilize
the structure.

The small model of the structure at the top of the tower shows a
grand glass room where the triangles create a crystal-like crown.

Other Name Chengdu Greenland Center
Location Chengdu, China
Urban Area Population 11,430,000 (2018)
Year Proposed 2011
Construction Started 2014
Year Completed 2021
Height 468 m / 1,535 ft / 101 fl
Developer Greenland Group
Architect Adrian Smith + Gordon Gill Architecture
Architect of Record East China Architectural Design & Research Institute
Structural Engineer Thornton Tomasetti
MEP PositivEnergy Practice
G.F.A. 220,500 m2 / 2,373,800 ft2