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Old 02-10-2007, 01:38 PM   #1
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Thawing frozen ground

I have to have my septic system inspected prior to selling the home. The inspector needs to take 2 soil borings. Has anyone heard of using a charcoal fire to thaw the frozen ground? I live in Minnesota and the frost is probably down several feet.


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Old 02-10-2007, 02:20 PM   #2
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Thawing frozen ground

It is done all the time for limited or defined areas.

For engineering purposes it is not really necessary, but for a septic system you may have to do it.

You can do it sometime ahead if you cover the area with insulation and a tarp to stop it from re-freezing.


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Old 02-10-2007, 04:27 PM   #3
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Thawing frozen ground

If you can get an old tractor rim-the ones with no center-they work great, build your fire inside the ring and it conentrates the heat into that area. You could do the same with the charcoal and an old tire rim too I guess. And if you have lots of time on your hands a simple propane handheld torch that is hooked to a 20lb or 100lb tank will do the trick also.
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