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Country Discussion Topics
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More on Sump Pump
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Illinois    Posted 10-10-2004 at 09:18:52       [Reply]  [No Email]
Have read the messages below on sump pump installation. I have a question. I did this a while back, installed a pump. Dug a hole, lined it with a section of perforated plastic field tile. The water I pump out is extremely muddy. Question is, am I undermining the basement floor, will it cave in at some point? After all, where is all the mud coming from? Am I creating a sink hole that will happen and me and my house will fall into it one of these years?

Bob/Ont    Posted 10-10-2004 at 10:56:56       [Reply]  [No Email]
It is likely soil from under the floor getting washed into it. To do it right there should be a weeping tile bed around the inside and outside of your foundation draining into the sump pump hole.
Later Bob

bulldinkie    Posted 10-11-2004 at 05:17:52       [Reply]  [Send Email]
My husbands puts these in homes he builds there is a container just for this It looks like a black garbage can with holes,place for pipe to go in yard.That would prevent soil from falling in.Hes always used them

Clod    Posted 10-10-2004 at 09:32:41       [Reply]  [No Email]
I do not pretend to be an expert on this subject . A sump pump does not require a very large area of space does it? If you cut a hole in the floor for the pump.Cut extra in diameter so you can add to the thickness of the walls and bottom then add plenty of rebar.Why would this cave in? They make bank vaults with concrete. Proper construction techniques are needed when you do these things. But maybe I do not understand your question.

Illinois    Posted 10-10-2004 at 09:48:39       [Reply]  [No Email]
Well, it`s just that I am concerned about all the mud in the water. I mean that is effectively dirt/earth that I am removing from out from under my concrete floor. Isn`t it? The water removal is fine, I understand that, but, I am actually removing a certain amount of earth with the water. Surely I am digging a hole by removing all this soil?

Willy-N    Posted 10-10-2004 at 10:01:20       [Reply]  [No Email]
You may be pulling some of the silt from near the sump hole under the slab. I do not think it would under mine your slab to the point of cracking it. You could dig out a little bit under the slab then put some round gravel in the bottom of the hole and sit a round plastic retainer with small holes drilled in it and fill the area around it with round gravel also. This will give you a area for the water to seep thru but not allow any further colasping of the dirt around the pit. The silt will soon quit after a while. Mark H.

Clod    Posted 10-10-2004 at 10:20:12       [Reply]  [No Email]
Oh,I see what you are getting at.Because the water being pumped out is muddy looking and you continue pumping over a period of years that you will remove the soil below the foundation and the floor will sink. There are people who can pump concrete under foundations with high pressure pumps. We are not in that business but we build pumping units for oilwells that do that kind of pressure pumping with concrete but into the wells. BUT ,You need to remove the water so you just do that because i do not think you will reomove enough soil under the foundation to cause a problem for a long time.

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