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Old 01-04-2011, 02:08 PM   #1
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PEX buried or in a conduit?


HI:

I've completed most of the DWV installation with ABS and I have one last job to take care of before closing everything up. I can run my main water supply across the ceiling but I would prefer under the concrete floor. I was thinking of running a line of ABS and soften the last few feet to give me a gentle arc and a continuous run of about 25' under the concrete and push a 3/4" PEX feed line through that to the home run manifold.

Is this a good idea? Or, would you just bury the PEX line?

I have a bed of sand on a very hard pack glacial moraine and I'll cover the whole thing with 4" of concrete.

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Old 01-04-2011, 02:32 PM   #2
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PEX buried or in a conduit?


For the price of 25' of ABS, run the pex inside.

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Old 01-04-2011, 02:40 PM   #3
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PEX buried or in a conduit?


Any time pex passes through concrete it must pass through a sleeve.

Last edited by VIPlumber; 01-04-2011 at 02:43 PM. Reason: Correction to wording.
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Old 01-04-2011, 04:32 PM   #4
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PEX buried or in a conduit?


Quote:
Originally Posted by VIPlumber View Post
Any time pex passes through concrete it must pass through a sleeve.
A side benefit of this is that if you have or suspect a problem with the pex line many years down the road, you could pull it out and replace it without having to break the concrete. Just that alone would make it worth running in a sleeve regardless of code. Ain't pex wonderful?...

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Old 01-04-2011, 06:39 PM   #5
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PEX buried or in a conduit?


instead of softening the pipe, consider using 2 45's or a long sweep 90. Should work
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Old 01-04-2011, 09:26 PM   #6
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PEX buried or in a conduit?


instead of using abs why not use another different flexible pipe like black roll pipe. i'd put 3/4 into 1-1/4''. either way, i say sleeve the heck out of it

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