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Old 12-23-2009, 10:25 PM   #1
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rerouting shower drain PAIN!


Hey guys, im stuck at this point trying to reroute this drain to the middle. As you can see ive already dug out a trench as much as i could, but up towards the current drain the concrete is SOOO thick i cant make it down towards the dirt... i used a hammer drill to drill into the concrete an extra foot at least and it still didnt hit dirt.

What can I do? i need to dig out around that current drain so i can cut it and put a new fitting on it as well as replace it because it is cracked on the side.

the trench is only about 6 to 7 inches deep..









Last edited by ericosuave; 12-23-2009 at 10:36 PM.
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Old 12-23-2009, 11:24 PM   #2
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whoa...are you rerouting drains in alcatraz? ive rerouted drains but never with 3' of concrete....geez. Tried the big boy jackhammer?? is it possible to cap off and re-run whole new drain?

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Old 12-23-2009, 11:38 PM   #3
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HAHA it does look like alcatraz! I wish i could re-run a whole new drain... I think my next step would be to rent a big jackhammer and go at it till i reach dirt or the pipe? i guess i could just break the pipe if i ever reach it than put a new piece...

the house is about 20 years old.. and whoever poured the slab went crazy around that drain cause its like the concrete there is 100 feet deep..

Last edited by ericosuave; 12-23-2009 at 11:41 PM.
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Old 12-23-2009, 11:58 PM   #4
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It looks to me you have an old drain from a tub / shower unit and it is probably 1 1/2" abs pipe. If that was the case you may or may not know that there is a p trap under the slab to prevent sewer gas from coming back up. Any who in all reality you need to eliminate the trap under slab either dig till you find it or.... cap that. I can see the vent pipe for that drain/trap in the wall there what you might do is break the concrete around that vent pipe and put in a new tee aiming for the new shower drain location. Where i am from code tells you it has to be 2 inch pipe for shower drains. 1 1/2 pipe for bathtubs/shwr unit. Hope this helps.
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Old 12-24-2009, 12:39 AM   #5
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It looks to me you have an old drain from a tub / shower unit and it is probably 1 1/2" abs pipe. If that was the case you may or may not know that there is a p trap under the slab to prevent sewer gas from coming back up. Any who in all reality you need to eliminate the trap under slab either dig till you find it or.... cap that. I can see the vent pipe for that drain/trap in the wall there what you might do is break the concrete around that vent pipe and put in a new tee aiming for the new shower drain location. Where i am from code tells you it has to be 2 inch pipe for shower drains. 1 1/2 pipe for bathtubs/shwr unit. Hope this helps.
does that p trap connect to that vent pipe? so does that existing 1 -1/2" drain pipe connect to that vent pipe?

what your saying is to break the concrete around the vent pipe, and once I do this there will be a P-trap ( which is the drain pipe coming out of the floor ) ? am I correct?

kinda like this?



If I cap that current existing drain pipe, what would I have to do to run the new drain? Just go straight down into the pipe and cut it and refit the new drain location? I am confused as to what steps to take next after I cap it.

Thanks for the help guys!

Last edited by ericosuave; 12-24-2009 at 12:53 AM.
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Old 12-24-2009, 01:01 AM   #6
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That is a lot of concrete. Looks like some sort of footing.
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Old 12-24-2009, 08:59 AM   #7
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What size is the drain pipe-2" or 2-1/2"od.?
What size is the vent pipe ?
Do you get a sewer smell from the pipe ?
Pour some water in the drain.Can you see water standing in the pipe ?
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Old 12-24-2009, 11:27 AM   #8
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What size is the drain pipe-2" or 2-1/2"od.?
What size is the vent pipe ?
Do you get a sewer smell from the pipe ?
Pour some water in the drain.Can you see water standing in the pipe ?
the current drain pipe is 1-1/2".. the new one going in is 2".
the vent pipe looks to be 2-1/2".
there is no sewer smell..
and there is standing water in the current drain pipe.
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Old 12-24-2009, 02:34 PM   #9
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i think the people that built the house were just lazy and filled the hole around that p-trap with concrete... I went at it with a big jackhammer but it seems like this concrete is never ending!! should I call in a professional?
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Old 12-24-2009, 03:45 PM   #10
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Since the vent pipe is 2",you could tie into it with a 2"t and route it to where you need to be as long as it's not over 4' from the trap to the vent pipe.
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Old 12-24-2009, 04:31 PM   #11
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Ok.. here are some new images after i broke out some more concrete around the drain... it looks like i got to the top of the P-trap... There is still more concrete around this freaking drain... it seems like they poured concrete ALL the way to the bottom and around the VENT pipe and the DRAIN! THIS IS NUTS! What should I do? keep going or what?

If i tap into the VENT pipe i still have to break out all the concrete around that vent pipe, and god knows how deep it is.


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Old 12-24-2009, 04:37 PM   #12
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looks like your almost there. I'd keep going.

I cant believe how deep that is!
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Old 12-24-2009, 05:36 PM   #13
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looks like your almost there. I'd keep going.

I cant believe how deep that is!
I don't think I'm even close! I still have that whole right side to get around the damn vent pipe. And than I I've to figure out how to break out the concrete around that vent pipe. This turned out to be a major headache and I shouldn't have even thought about converting this area to a standup shower!
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Old 12-24-2009, 06:33 PM   #14
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I would try drilling a bunch of holes horizontally around the vent pipe and attack it that way.Just get down low enough for your drain and chip out enough room for a tee and 2-2" no hub bands unless you chip all the way around the vent and are able to lift the pipe enough to get it in to the top of the t hub.( about 1")If not,you can glue a stub on each end of the t that stick out 1",use that to mark where to cut out that section of vent pipe(allow some extra room for the bands),put one band on the top and bottom of the pipe,roll the open end of the band down over its self and slide the t in.Roll the bands back up,slide the S.S.band over the rubber and tighten.
Hope this helps
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Old 12-24-2009, 06:36 PM   #15
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PS:I would just cap off the 1-1/2"pipe where its at.don't worry about the trap!

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