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Safe
and stable lifelines ensured
Underneath
the Waterfront City,
there
runs a high-spec multi-purpose underground duct measuring 16
kilometers in
overall
length, utilizing the underground space beneath roads and parks.
This
underground multi-purpose duct,
which
can withstand an earthquake of magnitude 8 ― the same as that
of the
Great Kanto Earthquake in 1923 ― houses all necessary features
of
urban
infrastructure, such as waterworks and sewerage,
electric
power cables, gas pipes, and telecommunications and information
cables.
The underground
multi-purpose duct, which is the largest of its kind in the
world,
is managed
around the clock to ensure reliable lifelines for Tokyo's citizenry.
In the
Waterfront City, all lifelines, including electricity, are
based on a two-line system,
so the
backup setup in the event of emergency is perfect.
The Waterfront
City, which has safe, stable lifelines,
meets
the conditions of a business base of the future.
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Developing
a town highly resistant to disasters
The optimum disaster
prevention measures conceivable are being taken at
Waterfront City.
Such
structures as bridge girders for Yurikamome and other public
facilities can
withstand
an earthquake comparable to the Great Kanto Earthquake in 1923.
Moreover,
there is no need to fear liquefaction of the ground,
often
feared about reclaimed ground, because ground improvement measures
have been taken.
Parks
and open spaces, which are built as areas of repose,
are barrier-free
so that they can offer shelters to all citizens in the event
of a disaster.
Sufficient
measures have also been taken to protect the area
from
a high tide by constructing a breakwater,
taking
precautions against a typhoon like the Ise Bay Typhoon (Typhoon
No. 15 of 1959).
"Ariake-no-Oka hill" in the Ariake Minami District
will become a rear support base
for the
defense of the entire Tokyo metropolitan area from disasters.
There,
a heliport and a general hospital will be constructed.
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