How Japan Built a $12 Billion Wall Against the Ocean

In 2011, Japan’s massive tsunami defenses were overwhelmed, destroying coastal barriers and devastating communities along the Tohoku coast. Japan responded with a roughly $12 billion coastal defense program spanning about 400 kilometers, but building it meant far more than simply constructing a giant seawall. This documentary goes inside the engineering behind Japan’s extraordinary tsunami defense system—from underwater rubble foundations and steel sheet piles to reinforced embankments, tetrapods, automated floodgates and earthquake-resistant structures. Discover how one of the world’s largest coastal megaprojects was designed to reduce tsunami damage and, most importantly, give people more time to escape. Thank you for watching: Why is Japan Building a $12BN Giant Wall? #Japan #Tsunami #Megaprojects With great passion for mega constructions I created this channel. With extensive and detailed research as well as impressive video editing, I want to make the most fascinating mega constructions worldwide accessible to you - for all those who are just as enthusiastic about constructions. Subscribe and welcome to the Signum Team!