| More than 1.2 million
cubic yards of earth and rock were excavated to make way for the World Trade Center.
The excavated material was placed in the Hudson River to create 23.5 acres of
new land deeded to the City of New York. This landfill area is now Battery Park
City.
More than 200,000
tons of steel, far more than the amount required for the construction of the
Verrazano Narrows Bridge, was used in the World Trade Center's construction.
The 425,000 cubic
yards of concrete used in building the World Trade Center is enough to build
a five-foot wide sidewalk from New York City to Washington, D.C.
At peak periods
of construction, some 3,500 workers were on the site daily.
There are 43,600
windows in the Twin Towers with over 600,000 square feet of glass window area
cleaned by automatic window washing machines traveling on stainless steel tracks.
With 60,000 tons
of cooling capacity, the World Trade Center's refrigeration plant is the largest
in the world.
The 360-foot television
mast atop One World Trade Center supports 10 main television antennas, numerous
auxiliary antennas and a master FM antenna. Transmissions from the mast began
in June, 1980. Ten television stations in the metropolitan area, including all
the major networks, broadcast from the mast. In addition, six stations broadcast
high-definition, digital television from the World Trade Center.
The Tower's skylobby
elevator systems separate express from local runs. There are 239 elevators and
71 escalators in the four buildings operated by the Port Authority at the complex.
The sky lobby express elevators are capable of carrying 55 people, a 10,000
pound capacity. Express elevators can travel at speeds of up to 27 feet per
second.
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