Updated

The work of replacing the Metrodome's damaged roof has begun.

The first three diamond-shaped panels are being stretched and clamped into place, a process that takes about a day for each panel.

The inside of the Dome resembled a construction zone Friday, with beeping machinery and scissor-lifts to handle the work. Meltwater from the most recent snowfall dripped through three sections that had been removed to prepare for the new panels.

It was a December snowstorm that caused the Dome roof to fail. Insurance is covering most of the replacement cost, and the work will continue six days a week in an effort to finish by Aug. 1, ahead of the Vikings' season.