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wileefox 05-19-2011 08:31 PM

Hole in Basement floor
I'm buying a new construction house with an unfinished basesment. I noticed that there is a framed in square in the basement floor, approximately 12 inches square, around which they poured the floor. The square is only filled with loose gravel. I think it's in the area that would normally be the lower floor bathroom.

What os the purpose of this square?

sixeightten 05-19-2011 08:33 PM

To tie in the drains.

wileefox 05-19-2011 08:44 PM

hole in basement floor
Please elaborate. I don't know what that means. Is there a stub of pipe somewhere beneath the gravel? If so, did they cap it? And if so, do I dig down around it and cut the cap off?

Sorry for all the questions, but no experience with this kind of thing

sixeightten 05-19-2011 08:53 PM

This was going to be a tub/shower location. There will be a 2 inch drain under the gravel. Depending on the type/brand of unit, the center line of the drain can vary. Is there also a toilet flange already set?

wileefox 05-19-2011 09:00 PM

hole in basement floor
There is a stub of pipe sticking out of the floor about an 1/8 or 1/4" high but no flange. I'm sure the plans must call for a flange to connect to that stub.

How do they keep any of the gravel from entering that drain pipe?

Interesting thing is that there are two drain pipes running down from the main floor bathrooms, but neither of them was plumbed with a Y for the downstairs bathroom sink.

sixeightten 05-19-2011 09:01 PM

The end of the pipe will have a temporary cap on it.

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