My neighbor is redoing his sewage pipe across my property. Pipe is now exposed on each side. the existing pipe is 5" ID ceramic pipe. The slope is 2" total for a 66' run.

He thinks it will help to put in 4" pipe using trench less installation. I think he should leave it alone and just install cleanouts at each end. Any opinions would be appreciated.

ballengerb1

Do you mean " slope is 2" total for a 66' run" for the entire run or 2" poer foot. The slope for a 4" or larger pipe should be 1/8" per foot. Can you explain what trenchless means?

massplumber2008

Hi all:

If your neighbor truly has a clay pipe then I would DEFINITELY advise him to use the trenchless method of pulling the new 4" PVC through the 6" clay line to get the best end result in the long run.

Clay pipe almost always is an issue nowadays...just so old and usually infested with roots and/or cracks in the line.

If he goes the trenchless route sounds like he won't damage much of your property and most importantly...HE WON'T BE BACK in 5 years to do it again...

Let us know if you want to discuss more...

MARK.

PS: Technically, that 6" clay pipe should have about 8 inches of pitch.

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