Can you identify this void in my Concrete Floor?

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Old 02-14-16, 10:58 AM
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Question Can you identify this void in my Concrete Floor?

This square void in my concrete was found when I pulled up the carpet. It's about a 20 inch square. When I remove the wooden door/cover there is just a void to the ground beneath the concrete floor. There is no drain or piping beneath it. The wall here is concrete block and the other side is a concrete patio.
Any ideas why this void was left? Thanks.


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Old 02-14-16, 11:08 AM
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A picture of the outside, far enough back to show the entire house might give us a clue.
 
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Old 02-14-16, 11:58 AM
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Here are 2 pics of the outside. The first is the entire outer wall. The second is closeup opposite of the void on the inside. Thanks for the reply.
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Old 02-14-16, 12:23 PM
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Only thing I can imagine is that if you would dig down in the soil you might find that there is a rough in for a toilet or shower. Unusual, since there is no vent pipe nearby... at least not that we can see.
 
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Old 02-14-16, 01:19 PM
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Dig down and see if it's a clean out for the sewer or shut off for the main water line.
 
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Old 02-14-16, 01:21 PM
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Or maybe they thought about putting a sump pit in there, once upon a time, and never did.
 
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Old 02-16-16, 06:54 PM
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I dug around expecting to find drainage tile but there's nothing. And it's on the opposite side of the house from the plumbing (well and septic - I live in the country). The house is built on a slope and faces a lake so a sump wouldn't be necessary, but a drain there would have made sense.
Thanks for the replies.
 
 

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