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Author:
Nancilsue (OH)
I bought a house a year ago and have had the kitchen sink/disposal backup problem since day one. We've had the main drain pipe snaked out twice. Things go well for a short while.
The previous owners replaced the kitchen drain pipe with the black PVC, but it runs uphill in the basement for about 4 feet, turns 90 degrees and spans about 9 feet to the main pipe.
My question is, am I fighting a loosing battle and I will always have problems until this is corrected? I've included a photo, you can see the copper pipes are pretty straight, the black PVC is behind it and going uphill. Appreciate any feedback.
Photo may come next, gotta figure it out
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Author:
KCRoto (MO)
Although the attempts so far to upload a picture have not been successful, I admire your tenacity. That being said, the answer to your question is yes. You will never have a properly working drain system that doesn't have a slope in the drainage. If you manage to get the pictures uploaded to photobucket, we may be able to offer some advice on the best way to get the problem corrected. As far as the main drain goes, I recommend getting a video inspection of the sewer done to see if there is a structural problem.
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Author:
Nancilsue (OH)
I got the picture on photo bucket, just can't get it on here. You did answer the question, and I thank you. Time to get out the hacksaw!
[s296.photobucket.com]
Edited 2 times.
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Author:
KCRoto (MO)
Depending on the slope of the long run of drain you may be able to readjust everything to correct the problem.
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Author:
Nancilsue (OH)
that's my plan, I'm going to cut off as much as I can on the vertical pipe in the basement then reattach. I think I saw somewhere on here that you should have a min of a 2 percent slope.
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Author:
bernabeu (SC)
1/8" per running foot for a fixture branch (1%)
1/4" per running foot for a 'main' (2%)
==============================================
"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638
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