Plumbing stack

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Old 01-03-18, 10:24 AM
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Plumbing stack

I inherited this mess... looks like i need to replace everything. lol
..but to remedy the smell i'm getting, i think replacing and rerouting the tub drain (horizontal pipe in upper left) and putting in a p-trap should temporarily do the job.??
what a mess.... comments please??
 
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Old 01-03-18, 10:32 AM
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Welcome to the forums.

What ever you end up doing..... be careful.
That cast iron stack is very heavy and there is very little there holding it up.
 
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Old 01-03-18, 10:53 AM
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thanks pj, will do, definitely!!
 
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Old 01-05-18, 09:56 AM
Z
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I agree - add some more metal tape to support that iron pipe. The one on the left looks like it could so easily slip off. It's entirely possible that this pipe dropped a bit when it was cut and dislodged some of the upstairs joints. The whole 4" to 3" isn't all that kosher either... but probably a bigger project than is worthwhile.

I don't know what's up with that dipped pipe on the right. And if your tub doesn't have a trap, that's definitely an issue.

What are you planning on changing?
 
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Old 01-06-18, 06:21 AM
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yeah.. its a mess. eventually i'd like to re-stack the whole thing, adding proper cleanouts and venting but right now i just want to remedy some of the smell.
the pipe in upper right is the jerryrigged tub drain with no trap and a bow in the pipe so i;m going to add a trap to that and pull the toilet, replace wax ring and seal it up tight. then i'll flush the DWV from roof.
i'm hoping that will knock out the vapors.
Thoughts??

(in previous post i said upper left on tub drain but meant on the right)
 

Last edited by Bagsby; 01-06-18 at 09:20 AM.
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Old 01-11-18, 11:16 AM
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Sounds reasonable. Adding a trap should solve your odor issues. The rest of it, while maybe not 100% perfect, should all work fine.

When you connect your CI to PVC be sure to use a no-hub coupling, the rubber coupling with a metal jacket around it. The 'fernco' rubber adapter like you have connecting the existing CI to PVC is not code-approved.
 
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Old 01-12-18, 04:59 AM
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cool, thanks for the advice,i'll do it!
 
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Old 01-21-18, 11:11 AM
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Get the support tape centers more above the iron pipe. If you take out the underneath pipe your iron could shift sideways. That black pipe has a big sag in it, it should run downhill 1/4" per foot slope. Add some p tape there. The white pvc looks like it is 4" to me. That would be the proper size. I echo earlier post, the coupling is wrong. I would use a full shielded coupling called a 'Mission band' that is designed for plastic to iron transitions. Or I also like the super heavy 'Husky Bands' that are industrial weight, but may be hard to find at the box stores.
 
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