Getting sink drain around dishwasher

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Elliesdad717

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Hello to all. I am a licensed independent contractor and new to this forum and am seeking advice. My wife and I re-configured the kitchen in a home we recently purchased. The sink is in a corner now and the drain cannot feasibly go inside the wall. I have run the drain through the inside of the base cabinets to the original entry point into the concrete slab the house is built upon but I will be installing a dishwasher and the only way around it would be to drop the drain with a 90 degree elbow down to close to the floor, go under the dishwasher at the back, and then back up to the original downward slope of the drain. It would more or less be a big trap, in addition to the trap just below the sink. Is this ok? Any advice would be appreciated.
 
I don't see how that would work. Are you doing that to drain the dish washer?
 
Thanks for the reply. I am trying to do it so I can get the dishwasher positioned under the counter and all the way in. Presently the drain from the sink along the wall is in the way. I would be draining the DW into the drain right under the sink, like most installations.
 
Sorry but I can't get this straight in my mind.
Are you talking about getting the dishwater drain over to the sink and concerned about dropping down then rising again before connecting to the sink drain(above the trap)? Dishwasher drain is a pumped drain(typically through a hose) so not sure why the mention of creating a trap. Hose does want to rise as high as possible below the counter prior to connecting the sink drain(to protect against siphoning).
 
Sorry but I can't get this straight in my mind.
Are you talking about getting the dishwater drain over to the sink and concerned about dropping down then rising again before connecting to the sink drain(above the trap)? Dishwasher drain is a pumped drain(typically through a hose) so not sure why the mention of creating a trap. Hose does want to rise as high as possible below the counter prior to connecting the sink drain(to protect against siphoning).
I think OP wanted to drop the drain that goes to sink that is roughed in on other side of dishwasher to go under said dishwasher and then back up because they moved the sink.
 
Gotcha...
I just couldn't envision a sink drain being routed under a dishwasher.
Is there space for that or was the thought below the concrete slab??
Is an under sink dishwasher an option?
Bite the bullet and swap locations of sink and dishwasher.
What other options are there beside routing the sink drain below with separate connection to under slab piping.
Presumably, the sink trap has been properly vented.
 
I’m sorry I only got back to this now, was out of cell phone/internet service for awhile. I appreciate the responses. I will try and make this as simple as I can to understand. Forget the dishwasher, forget the sink...which said drain is properly vented. Let’s just imagine a standard drain running horizontal, with the normal 1/4” per foot slope. The issue would be there is an obstacle that the drain needs to go under, across and then back up to the aforementioned downward sloping drain run. This “U” would basically hold water all the time and the water would only change when additional water was put into the drain, uphill, from a sink. Are there issues with this configuration? Thanks again.
 
no cant go down then up. problem will be clogs, first thing is vent is no good anymore and 2nd drain will be very slow and will absolutely clog. can you run pipe through wall behind dishwasher then back out to keep proper pitch
 
no cant go down then up. problem will be clogs, first thing is vent is no good anymore and 2nd drain will be very slow and will absolutely clog. can you run pipe through wall behind dishwasher then back out to keep proper pitch
 
Thanks to all. Mike I suppose I could go into the wall, across the width of the dishwasher and then back out. The home is stucco over metal mesh over plywood on metal studs. I was hoping to avoid cutting through all of that. As the responses are unanimous I will seek another remedy. I could swap the dishwasher with a base cabinet just past where the drain goes into the wall. I was hoping to keep it near the sink but this would not be the end of the world. Thank you all for your expertise!
 
I’m sorry I only got back to this now, was out of cell phone/internet service for awhile. I appreciate the responses. I will try and make this as simple as I can to understand. Forget the dishwasher, forget the sink...which said drain is properly vented. Let’s just imagine a standard drain running horizontal, with the normal 1/4” per foot slope. The issue would be there is an obstacle that the drain needs to go under, across and then back up to the aforementioned downward sloping drain run. This “U” would basically hold water all the time and the water would only change when additional water was put into the drain, uphill, from a sink. Are there issues with this configuration? Thanks again.
good luck with what you come up with
 
cut into the back cabinet, leaving the cabinet in place
now you are in the wall behind where the sink was,,
the tee that is sticking out of the wall,, turn it around, cut a neat hole in the outside wall
exit the house.
run the pipe to the new location.
cover the exposed piping with new stucco to match the house
 
I'm lost!
The original/existing connection, in the original location of the sink, is down into the concrete slab. As I understand it.
"the tee that is sticking out of the wall"?
He he was planning to go down under the dishwasher, I would assume he would be below the slab. If he was actually going that far(which maybe he wasn't doing??), just connect with drain line already below the slab and not rise back up. ???
 
Again I appreciate the responses. Frodo the stucco I mentioned is in the inside of the house. There is real stone, and not just stone face, on the outside of the home or that would be a good solution. Diehard...the drain is indeed accessed by a T coming out of the wall about 22” above the concrete slab the drain runs through on its way to the sceptic system. I did not send a pic because everyone said it won’t work and I have elected to swap the dishwasher with a cabinet that will have the dishwasher just beyond the drain running along the wall.While I have everyone’s attention can I then drain the dishwasher into the drain, in the wall, just above where the original drain from the sink Ts into it? Here is a pic of the opening. The vent can be seen going up through the wall to the roof. The sink is to the right, the cabinet on the left will be moved to the right to fill the dishwasher opening and the dishwasher will be moved to the left. I hope I am making sense. Lastly, the dishwashers I have worked with (limited number) all have had a space in the back, below the tub, that would’ve permitted space for the drain to pass through without interferenc and without going into or under the slab. The problem would be I would have to then go back up to the catch the drain. I understand, thanks to you all, that that would not work. I hope this helps better explain my situation.Again I really do appreciate all of your efforts to understand and help!
 

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if you have rock on the outside wall
remove the rock you need removed, run the drain, hugged up next to the wire mesh
rent a concrete saw. cut the rock you have removed in half and cover the pipe

btw, the wye fitting in the picture is blocking the vent, that fitting should be a tee, not a wye
 

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