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Old 04-28-2013, 09:20 PM   #1
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Basement Sink Rough-in Drain Pipe


I am fixing to frame the area of my basement where a full bathroom will be.
There are 3 pipes, the sink drain pipe, toilet drain pipe, and shower drain pipe. I am pretty sure which one is which at this time (see the pictures).

Basement Sink Rough-in Drain Pipe-plumbing1a.jpgBasement Sink Rough-in Drain Pipe-plumbing2a.jpg

I will be installing 2" XPS insulation panel on the wall, the uses 2x4 lumber to frame.

What I am puzzled is the distance of the sink drain pipe. It is 6.5" from the concrete wall and it extends from the floor to the ceiling. If I subtract 5.5" (2" XPS + 3.5" lumber), the pipe is 1" outside the wall.

Basement Sink Rough-in Drain Pipe-plumbing3a.jpg

Should this pipe sits behind the frame wall?
If I put the frame in front of the pipe, part of the bathroom wall (i.e. where the sink will be) is bumping out about 11.5" from the rest of the wall. Is that not odd?? Did I miss something?

Any input is appreciated.

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Old 04-30-2013, 07:37 PM   #2
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Basement Sink Rough-in Drain Pipe


Anyone?

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Old 04-30-2013, 08:03 PM   #3
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Basement Sink Rough-in Drain Pipe


The pipe should be in the wall. Put the room side of the wall flush with the room side edge of the pipe.
Also check that you have 12.5" from the face of the wall to the center of the 3" toilet pipe- this is really the critical measurement
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Old 05-01-2013, 05:53 PM   #4
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Basement Sink Rough-in Drain Pipe


Your plumber was a lazy and cheap one and did not want to roll the drain up above your footer. That would have added a few more fittings..... Just saying!!!
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Old 05-02-2013, 07:32 AM   #5
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Basement Sink Rough-in Drain Pipe


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Originally Posted by TheEplumber View Post
The pipe should be in the wall. Put the room side of the wall flush with the room side edge of the pipe.
Also check that you have 12.5" from the face of the wall to the center of the 3" toilet pipe- this is really the critical measurement
Thank you!

I guess I need to use 2x6 lumbers for this part of the wall as the drain pipe is about 2.5", or do you think 2x4 lumber can handle this?

Note: it is not a load bearing wall, and I will be putting a metal strip on the bottom and top plates preventing any nail punctures.
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Old 05-02-2013, 07:39 AM   #6
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Basement Sink Rough-in Drain Pipe


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Your plumber was a lazy and cheap one and did not want to roll the drain up above your footer. That would have added a few more fittings..... Just saying!!!
Well, what commercial builders build a house with high quality? All they care is maximizing the profit and minimizing the spending/cost. If it means get the laziest and the cheapest plumber as long as the work meet the code, so be it.
This is not the only thing that I have been dealing with in the last few months fixing my basement.

The consumers like me are the victims. Good thing that I didn't pay them to finish the basement because all these stuff would have been hidden and I have to pay a lot to fix them later.

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