The Thames Barrier must never fail. Here's why it doesn't.

Summary by Krater

Tom Scott explores the Thames Barrier in London, explaining its engineering, mechanical redundancy, and safety measures designed to protect the city from catastrophic flooding.

From the video

Answers: How does the Thames Barrier work and protect London from floods?

• Thames Barrier engineering
• London flood protection
• tidal barrier mechanics
• infrastructure redundancy

What it concludes

• The Thames Barrier financial cost of London flooding is estimated to be between 20 billion and 100 billion pounds.
• The barrier is designed to not fail, with redundant power systems, multiple motors, and diesel generators.
• Piers are made of Portland cement and protected by a sacrificial anode to prevent electrochemical corrosion.
• The barrier was designed with a huge margin of safety, including built-in breathing space to handle higher-than-expected surges.