Reply #11: The dome is held up by air pressure, like most domes.

[MineralMan]

One panel got ripped, due to the snow and wind. When that happens the dome deflates. They'll fix that panel, turn the blowers back on, and it will re-inflate. The Metrodome IS heated. As I said, this was an exceptional storm. They'll fix it for a lot less than it would cost to put enough heat into the place to melt almost 20" of snow, I guarantee.