How a single phone call from a student helped uncover a flaw that nearly toppled Citicorp.
00:00 - Why is the citicorp building on stilts?
04:44 - How wind load works
07:49 - Tuned Mass Dampers
11:17 - The Anonymous Student
14:00 - Quartering Winds
18:38 - What were the odds of collapse?
20:31 - How was the citicorp building fixed?
25:40 - Hurricane Ella
27:00 - TMDs Take Over The World
28:36 - Conspiracies and Cover Ups