The dome consisted of an air supported fiberglass fabric roof and a 340 ton cover for the dome was held in place by air pressure generated fans and steel cables.
The metrodome roof.
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.
The first collapse of the teflon and fiberglass fabric dome roof at the metrodome occurred in november 1981 after 10 inches of heavy snow fell.
The dome s roof once against deflated and tore due to snow in the spring of 1983 postponing a minnesota twins game.
The metrodome s air supported roof was designed by the inventor of air supported structures david h.
However the roof has collapsed four times due to snow the last in december 2010 causing the vikings game to be postponed and moved.
The roof had snow melting ducts to prevent a collapse.
The metrodome roof 2020.