Skip to main content

How one design flaw almost toppled a skyscraper - Alex Gendler

873,782 Views

4,999 Questions Answered

TEDEd Animation

Let’s Begin…

In 1978, Diane Hartley was writing her undergraduate architecture thesis when she made a shocking discovery. After weeks of poring over the Citicorp Center’s building plans, she’d stumbled on an oversight that threatened to topple the 59-story tower into one of New York City’s most densely populated districts. Alex Gendler digs into the skyscraper’s potentially deadly mistake.

Additional Resources for you to Explore

The Citicorp Tower is now officially known as 601 Lexington, but its history is now used as a case study in architectural and professional ethics. You can read about William LeMesurrier and his other work, learn more about the near-disaster, read the original New Yorker article, or find out more about Diane Hartley, including an interview.

Next Section »

About TED-Ed Animations

TED-Ed Animations feature the words and ideas of educators brought to life by professional animators. Are you an educator or animator interested in creating a TED-Ed Animation? Nominate yourself here »

Meet The Creators

  • Director Nicholas Paim
  • Educator Alex Gendler
  • Narrator Jack Cutmore-Scott
  • Storyboard Artist Alopra Studio
  • Animator Alopra Studio
  • Art Director Nicholas Paim
  • Music Stephen LaRosa
  • Sound Designer Stephen LaRosa
  • Director of Production Gerta Xhelo
  • Editorial Director Alex Rosenthal
  • Producer Bethany Cutmore-Scott
  • Editorial Producer Dan Kwartler
  • Production Coordinator Abdallah Ewis
  • Fact-Checker Eden Girma

More from The World's People and Places