Live Oak —
A professional geologist from Bracken Engineering, Andrew Glasbrenner, said he and his crew had conducted a test of the soil a few feet from the condemned buildings on Warren Street. Their investigation revealed that there were five different types of soil found and it was determined there was a subsidence, or shifting of the soil, that was caused by the sinkhole.
“Just off the curb, we placed one of our borings,” said Glasbernner. “It was 160 feet to rock there. Very deep sinkhole, very broad.”
It was in his professional opinion that the circumference of the sinkhole encompassed the greater part of the buildings.
Glasbrenner said the sinkhole is a “zone of loose, weak soils that are moving down and will continue to move down. The sinkhole diameter is large, but not like an open void.”
He said that the sinkhole was more like an hourglass that over a long period of time would eventually keep settling. He explained that the sinkhole was not a cover-collapse sinkhole, but a cover-subsidence sinkhole.
He concluded that it was of his opinion there was no real danger for the demolition crew that would be tearing the buildings down.
The remedy
“The remediation plan we developed consists of a process called compaction grouting,” said John Greis, project manager and professional engineer with Bracken. “We have designed for a contractor to install basically steel pipes in the ground, two or three inches in diameter.”
He went on to explain that these pipes would be placed on a grid and that grout he described as being like cement, or mortar and under pressure would be injected into the areas to densify.
Suwannee Democrat
February 7, 2013
‘Very deep, very broad’ sinkhole
A closer look at the Warren Street ‘hourglass’
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Morning Update for Thursday, May 23, 2013
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Boat safely this holiday weekend!
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Mommies helping mommies
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FWC visits with gator
Florida Fish and Wildlife Conservation Commission Officer D. Mobley stopped by the Democrat offices Wednesday afternoon with this alligator that he had just caught in a Hamilton County pond. Mobley will be showing another alligator to students at Suwannee Primary School on Thursday along with other wildlife as part of an FWC event.
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Democrat Morning Update for Wednesday, May 22, 2013
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Relay for Life - Mending hearts, curing cancer
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Video included
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Buckling down on those not buckled up
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Democrat Morning Update for Tuesday, May 21, 2013
Good morning. Here are your updates for today.
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Rotary Club of Live Oak Scholarships presented
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