This involved conducting studies to characterize the statistics of extreme winds based on historical records collected at local weather stations. We also thoroughly analyzed how changing the building’s orientation would alter wind effects. By changing the number and spacing of the setbacks, among other shape modifications, it became possible to substantially reduce wind forces on the tower by encouraging vortex shedding that is not synchronized over the height of the tower. This testing enabled us to quickly evaluate the effectiveness of the team’s reshaping efforts as we worked to minimize wind effects and accommodate the client’s changes. We followed early studies in the wind tunnel with additional rounds of wind tunnel testing as the tower geometry evolved. ![]() Early wind testing using a high-frequency-force-balance provided initial wind load information for the initial design that accounted for the crosswind effects of vortex shedding on the building, providing insights we shared with the design team that led to the shaping of the tower.
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