Sinkhole recovery progressing
Another Corvette located, debris removal underway
Eric Kaminsky - March 28, 2014 03:35 PM
A worker probes for one of the Corvettes still missing. Late on March 28, one had been found and the location marked.Image courtesy of the National Corvette Museum
A stake marks what appears to be the hood of the 1,500,000th Corvette, discovered on March 28.Image courtesy of the National Corvette Museum
One of the micropilings and brace that now help support the spire in the Skydome.Image courtesy of the National Corvette Museum
Construction crews at the National Corvette Museum spent nearly a week removing the jagged edges of the broken concrete floor that protruded out over the sinkhole that formed underneath the Skydome on February 12. They were then hoisted out by cranes after they were cut into smaller pieces.
Now, crews have begun to remove dirt and other debris in the search for the remaining cars still buried under the rubble of the floor’s collapse. The rear end of the ZR1 Spyder was partially exposed after the last car (the PPG Pace Car, the fifth one recovered) was removed on March 6, but the rest of the Spyder is still buried nose down. To prevent further damage while excavation work proceeded, it was covered with a tarp and then sand.
On Friday, March 28, crews began excavating where they believed the 1,500,000th Corvette was buried. Work progressed slowly, but steadily as they probed a number of areas in an effort to find it. Late in the day, workers signaled they had found the car, and marked it with a stake.
A temporary wooden railing has now been installed around the sinkhole, with other areas roped off with caution tape to allow equipment in and out.
Earlier, the distinctive red spire, which lost part of its foundation when the sinkhole collapsed, was stabilized with micropilings – long steel shafts filled with low mobility grout that reach down to solid rock. Braces were welded to the shaft and then connected to the spire with 18 bolts per brace in a number of locations. The braces were then encased in concrete, and will be just below the surface of the finished floor.
Micropiling was also done around the outside of the Skydome.
To view the construction and recovery process through live web cams, or get the latest news, check out www.corvettemuseum.org