Hi Sun Choi

Thornton Tomasetti, Inc., Senior Principal | New York City, United States


Hi Sun Choi is a Senior Principal at Thornton Tomasetti and has over 20 years of experience in structural analysis, investigation, design and review of a variety of building types, including commercial and residential buildings. Her expertise includes the design of super tall buildings for seismic risk assessment, building motion due to wind, performance-based design, and waterfront developments on reclaimed land. She has worked on projects in the United States, South Korea, the U.A.E., Azerbaijan, China, and Vietnam.

Hi Sun’s key projects include the Hudson Yard Development and Barclay Headquarters, New York; New Songdo City Development, We’ve the Zenith, and Incheon Airport Phase III, South Korea; Shanghai Center, China; Socar Tower and Baku National Stadium, Azerbaijan; and Lotte Hanoi Center. Her work on Baku National Stadium, Azerbaijan received the ENR Global Best Project Award in 2015 and…

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Diversity & Inclusion Committee, Co-Chair (2020 – Present)

Annual Conference, Presenter (China 2016; Chicago 2019)

CTBUH Initiatives


10 October 2011

As outrigger systems have been widely used in supertall building design since 1980's, CTBUH recognized a need for general design guidelines and formed the Outrigger...


08 August 2017

Hi sun Choi & Leonard M. Joseph, Thornton Tomasetti; SawTeen See, Leslie E. Robertson Associates; Rupa Garai, Skidmore, Owings & Merrill LLP

In 2012, CTBUH published the first Outrigger Design for High-Rise Buildings Technical Guide. In 2016, the CTBUH Outrigger Working Group felt it would be beneficial...


17 October 2016

Hi Sun Choi & Onur Ihtiyar, Thornton Tomasetti, Inc.; Young Kyoon Jeong & Hyungsup Sim, Heerim Architects & Planners

Baku, the capital of Azerbaijan, has been rapidly transforming into a hub of high-rise buildings and cultural centers in the Caspian region. Baku’s population now...