The metrodome roof 2020.
The metrodome roof.
The metrodome s air supported roof was designed by the inventor of air supported structures david h.
An air supported structure supported by positive air pressure it required 250 000 ft min 120 m s of air to keep it inflated.
However the roof has collapsed four times due to snow the last in december 2010 causing the vikings game to be postponed and moved.
Geiger through his new york based geiger berger associates and manufactured and installed by birdair structures.
The roof had snow melting ducts to prevent a collapse.
The dome s roof once against deflated and tore due to snow in the spring of 1983 postponing a minnesota twins game.
Then in april 1986 the metrodome roof tore but didn t deflate due to high winds which delayed a twins game against the california angels.