Not So Current Affairs -- World's Strongest Retaining Wall (2011-08-13)
This is the strongest barrier/retaining wall in the world
Real thing (as being used in Yamaguchi Prefecture)
The wall is made up of these concrete locking pins
Filled with stones or concrete rubble
the wall is 4m tall and 70m long
Another one is being utilized as a river's retaining wall
This fisherman says the number of fish in the river grew because of the wall which also protects the river from typhoon
It extends under the water where it also provides a habitat for fish
Built along streams,
it blends into the environment
The designer says the wall won't change even after 1000 years
The other type of barrier wall on the coast is destroyed by the tsunami
Although made of concrete, it's surprisingly weak
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