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Mellon arena retractable roof.
Six of the sections could fold underneath two in 2 minutes making the civic arena the world s first major indoor sports stadium with a retractable roof.
At the time of its completion pittsburgh s mellon arena was hailed as an engineering marvel.
Sofi stadium is an unprecedented and unparalleled sports and entertainment destination being built in inglewood ca by los angeles rams owner chairman e.
A change in the plans to make the roof retractable drove the price tag to 21 7 million.
Originally budgeted to cost 19 million it would take 40 months to construct.
Built in the early 1960s for pittsburgh s civic light opera it was the first stadium arena to have a retractable roof and was the home of the penguins from 1967 to 2010.
Rip civic arena all items pictures songs etc go to their respective owners.
Six of the sections could fold underneath two in two and one half minutes making the mellon arena the world s first major indoor sports stadium with a retractable roof.
It kept that record until the houston astrodome was built three years later.
The steel dome weighs almost four thousand tons and has a diameter of a little over four hundred feet.
Construction of the civic auditorium.
The stadium s capacity fluctuates depending on the event being hosted but has increased due to additions between 1972 and 1991.
It also played host to the.
Construction of the civic arena began on april 25 1958.
The mellon arena was the first retractable dome and it was the largest dome in the world at the time it was built.
The arena which covered 170 000 square feet had the first retractable roof ever on a major sports venue in the world.
It was constructed with just shy of 3 000 tons of steel manufactured in the city of pittsburgh.