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.
Mellon arena retractable roof.
Construction of the civic arena began on april 25 1958.
The steel dome weighs almost four thousand tons and has a diameter of a little over four hundred feet.
The mellon arena was the first retractable dome and it was the largest dome in the world at the time it was built.
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.
Sofi stadium is an unprecedented and unparalleled sports and entertainment destination being built in inglewood ca by los angeles rams owner chairman e.
The arena which covered 170 000 square feet had the first retractable roof ever on a major sports venue in the world.
The stadium s capacity fluctuates depending on the event being hosted but has increased due to additions between 1972 and 1991.
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A total of 42 trucks mounted on 78 wheels 30 of which were individually driven supported and moved the six moveable sections.
It also played host to the.
The freight elevator rises slowly climbing to the top level at sofi stadium this is the part of the new nfl venue under construction in inglewood where kevin demoff gets excited.
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.
Originally budgeted to cost 19 million it would take 40 months to construct.
It was constructed with just shy of 3 000 tons of steel manufactured in the city of pittsburgh.
A change in the plans to make the roof retractable drove the price tag to 21 7 million.
No freestanding retractable steel dome had ever been attempted in america and for years the mellon arena stood as the only extant example.