99% Invisible cover image

99% Invisible

Structural Integrity (Rebroadcast)

Oct 14, 2015
23:17
Snipd AI
Learn about the unique construction of the City Corp Tower and the challenges faced. Discover the potential flaw in the building's structure and the secret construction project that took place. Hear about Diane Hartley's research on the building's design, and reflections on problem-solving and gratitude.
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Podcast summary created with Snipd AI

Quick takeaways

  • The City Corp Center's unique design featured stilts that supported the building, but this innovative design posed a hidden danger related to cornering winds.
  • A potential disaster was concealed for many years due to the building's vulnerability to quartering winds, which was discovered by a college senior but not fully addressed at the time.

Deep dives

City Corp Center's Unusual Design

The City Corp Center, a skyscraper in New York, has a unique and visually stunning design. The building appears to be floating mid-air, supported by stilts that are not located in the corners as one would expect. The architect, Hugh Stubbins, and the Chief Structural Engineer, William LeMejor, worked together to create a lightweight structure using a chevron bracing system. The building's stability is ensured by a 400-ton tuned mass damper on the rooftop. However, this innovative design posed a hidden danger related to cornering winds.

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