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Tuned mass dampers
A student's question about wind load revealed the Citicorp building's design flaw. The building's diagonal supports were too weak to withstand quartering winds, a problem fixed with tuned mass dampers.
- 🌬️ The building's diagonal bracing was designed for direct wind forces, not the more complex quartering winds.
- 📉 A student's question about wind load prompted engineers to re-evaluate the design, uncovering the potential for collapse.
- ⚖️ Tuned mass dampers, large counterweights, were installed to counteract wind-induced oscillations.
- 💨 Hurricane Ella was the near-miss event that highlighted the building's vulnerability.
A cartoon man with a beard and glasses is on the phone, with a red arrow pointing to a skyscraper that has a red grid overlay indicating structural stress.