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Author:
MagicMike (NY)
I need to replace the existing 4" cast iron drain pipe buried in my basement floor. I had it checked with a camera and its is bad shape. My question is:
Should I go with Cast Iron or PVC?
My plumber told me PVC is not code if it gets buried and is only for aboveground use. I called a local plumbing supply place and they told me that its OK to use PVC. Or I can use Service Weight cast iron.
I tried calling the local building dept. but could not get through. I looked up my town code online and it says only extra heavy cast iron can be used under cement.
Now, I am really confused and don't understand why PVC would be preferred since it wont rust. I live in the Town of Huntington, Long Island NY.. Anyone familiar? Thanks in advance.
Mike
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Author:
dlh (TX)
your town probably hasn't upgraded its code in a long time but since that is their code you need to follow it and install cast iron. new cast will last a great many years, especially if you don't pour chemicals in it
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PLUMBERS "Protecting The Health Of The Nation"
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Author:
packy (MA)
good luck getting XH cast iron pipe and fittings..
i would use PVC underground and never even give it a second thought.
i have dug up PVC that has been buried for 20 or more years and you can still read the writing on the side of it.
anyway, i'm guessing that XH cast iron with poured lead joint would cost 15 to 20 times as much as PVC. if you can even find a plumber who can do that type of work.
as for no-hub soil pipe... well it is a joke. the cast iron pipe is thin and will be worn out in 20 years.
RUN PVC..
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Author:
MagicMike (NY)
Thanks Packy.. I agree with your thinking. Will schedule 40 PVC be sufficient?
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Author:
bernabeu (SC)
you MUST meet your local building/plumbing code
GET A PERMIT
I would use the no-hub (if allowed) with the 8 band clamps (forget what they're called) designed for underground
make sure the new pipe lays in and is covered by a bed of PACKED sand
if it becomes expensive....so be it
ps. service weight 'no-hub' CI (which is centrifugally spun in the mold) has exactly the same minimum wall thickness specification as the 'old time' XH cast CI - the XH was, hopefully, installed with the heavy wall downwards, but ............
just like studding a wall - you look for the crown of the 2x4 and lay them all the same way
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"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638
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Author:
packy (MA)
schedule 40 will be just right for the job. surround it with fine sand, no sharp rocks should
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Author:
Paul48 (CT)
I think no-hub would be my last choice if I had that problem. How long will the couplings last, before dry-rotting? How about if chemical drain cleaners are put down a drain? I'd find something acceptable within your local code, other than no-hub.
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