After 9/11: The Untold Story of the Engineers Who Entered Ground Zero

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Engineers who responded to Ground Zero after 9/11 reflect on the collapse of the Twin Towers, the World Trade Center recovery effort, and the structural engineering lessons that reshaped New York City.

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0:00 September 11, 2001: The 9/11 Attacks Begin
4:06 Remembering 9/11 at the World Trade Center
5:16 What Structural Engineers Do
6:58 The Engineering History of New York City Skyscrapers
7:41 How the Twin Towers Were Engineered
10:42 Engineers Witness the World Trade Center Attacks
12:38 Structural Engineers Mobilize at Ground Zero
15:23 Search and Rescue at Ground Zero
21:28 Assessing Buildings Damaged by the Twin Towers Collapse
27:16 The Ground Zero Slurry Wall and Hudson River Threat
31:02 From Search and Rescue to Ground Zero Recovery
31:50 The Last Column of the World Trade Center
34:00 Why the Twin Towers Collapsed on 9/11
37:51 The Emotional and Health Toll of Ground Zero
39:19 How 9/11 Changed New York City Building Codes
40:56 Rebuilding Lower Manhattan After 9/11
41:29 The Legacy of the Engineers at Ground Zero

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