Officials in Shanghai, the
second biggest city in China, say they must reduce the construction of
new high-rise building .Over the last ten years ,about 3,000 new buildings have
gone up ,and there are plans for 2,000 more .Shanghai is growing faster than
any other city in history .It looks good ,but now the weight of the concrete
and steel is making the city sink .Many parts are sinking more than a
centimeter every year.
The
tallest building in china is in Shanghai, and a building that will be the
tallest in the world is going up .It seems that planners are forgetting that
the area was once a swamp .The rock bed is about 300 meters below the
surface and the land is very soft .Officials are worried about what will happen
to buildings that are already up and the city’s subway if construction
continues .Some of the subway tunnels are already changing shape.
The
problem is the worst in the busy financial center ,where there are huge skyscrapers
on what was farmland not long ago .A report says that land there sank nearly
four centimeters last year .Land around the tallest building sank nearly six
centimeters.
Officials
started to record changes in 1921,and they believe the city has sunk nearly two
meters since then .There are similar problem in Bangkok and Mexico City ,and
the people of Shanghai need to understand that construction must slow down .The officials hope to show them how bad the
problem is .However ,with so many building
already
up it may be too late.
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