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Blown away: Citicorp Center Tower repairs revisited

Published

Author(s)

Dat Duthinh

Abstract

Using Database-Assisted Design and the Tokyo Polytechnic University Aerodynamic Database, we show that face winds put more structural demand than corner winds do on the Citicorp Tower in Manhattan. This 59-story building, supported by four midside columns, famously had to undergo secret emergency strengthening shortly after its completion in the 1970s to withstand corner winds.
Citation
Engineers Journal

Keywords

across-wind excitation, along-wind excitation, aerodynamic database, Citicorp Tower, corner wind, Database-Assisted Design, engineering ethics, face wind, overturning moment, vortex-shedding.
Created June 30, 2019, Updated August 17, 2020