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Thanks Matt G. I’ll be more specific. My footing problem is a high water table. Footing holes are dug down below frost and some holes have standing water. Any suggestions?
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two things you can do...you can make a modified tremie pour or make a caisson ....
1) scrape the mud out with a hoe so you have undisturbed bearing soil, get some 12" or 14" sonotube and stick it in the bottom pump you concrete into the tube being careful to keep the crete as a homogenous (sic.?) mass, raise the botom of the pump hose up as you fill, there will be some surface degradation of the concrete, but it will cure within that shell to design strength.
If you don't have a pump truck you can try chute placement or shoveling it in, you just don't want to mix the water with the conc. mix.
2) get some large diameter alum. corrugated sewer pipe from your highway dept. They've got butt ends lying around from field cuts.
Sink the pipe into your hole and screw it into the subsoil.
Throw a sump pump (a good mud sucker is best) in and drain the pipe (caisson). If the bottom won't seal, buy a 5 gal pail of hydraulic cement and mix up enough to build a seal in the bottom. Then pump it out and pour your footing , leaving the caisson in place permanently.
3)Dig the hole, pump it dry, scoop out the mud, pour your footing and don't worry about the water covering it, this is another version of the tremie pour from #1
I've used all 3 methods, #2 when the inspector wanted to see the bottoms of my holes for pole barn footings...
b and don't track any mud into the house neither....
*I only ran into this once. I came up with this solution on my own and never had an engineer or inspector approve it. I'm not saying that it's necessarily a good idea but it is guaranteed to be an idea.I was doing pier footings for a deck along a lake. There was about 1' of water in the bottoms of the 3' footings.I used sonotubes, and poured the concrete in plastic bags inside the tubes. I didn't know if the concrete would be able to displace the water in the sonotubes so I used a length of hose and one of those drill pumps to pump the water out of from under the concrete after I poured about a foot of concrete into the bag. I think it worked fine...it's kind of hard to inspect the bottom side of a pier footing though. As it's been said: Of course, I could be wrong.
*Here on the Long Island shore they will drill a hole and sink a caisson. Then they just pump in the concrete, eventhough the entire caisson is filled with water. The concrete displaces the water and cures fine.Jerry
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Thanks Matt G. I'll be more specific. My footing problem is a high water table. Footing holes are dug down below frost and some holes have standing water. Any suggestions?