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Old 11-02-2012, 10:52 PM   #1
Chuckman4112
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Default Kitchen Renovation Help

Hello all,

Just looking for some helpful information for my Kithen make-over.

Information...

I am planning on moving my sink from a current inside wall to the center of the kitchen. My first level (Kitchen level) of my home is on a 4" slab. My home was built in the late 50's. There is a main drain line under the floor approximately 5 feet over from where the new sink will be. How far down, I'm not quite sure yet. I am guessing that it is at least 10" total or more. Obviously I will need to tie into that for the drain and I will have to run the water lines also. The dish washer will be on the island also, so I am going to need to run electric. I have attached a JPG so you get a better picture of layout.

Questions...

1.) Where should I run the water lines and wiring? In the dirt under the slab?
2.) Is there any special wrapping I should do for the lines?
3.) I am guessing that a 5' 1-1/2 drain run from island to main drain tie in will have more than enough slope. True?
4.) Can I run the electric conduit in the same channel as the water pipes?

Anything you can help with would be appreciated...Thanks



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Old 11-03-2012, 01:46 PM   #2
phishfood
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I would run the new drain with 2" pipe. Put a cleanout on the new drain riser just above the floor or inside the cabinet.

If you can, tie into the existing water lines above the slab so that transition from old to new piping is accessible.

The wiring needs to be inside of an electrical conduit under the concrete, with as few bends in it as possible.

Looking at it, I would probably cut two trenches in the floor, one for the drain line, and the other for the water lines and electrical conduit.

Please note that I am a plumber, not an electrician, and so any electrical advice I might give is unprofessional



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Old 11-03-2012, 03:50 PM   #3
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My question is with the island sink how do you plan on venting your drain? You could do an AAV I suppose. Might be the easiest considering its on slab.

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Old 11-03-2012, 09:09 PM   #4
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Thanks Phishfood

Stevemachine, Looking at my picture where it says "Main Drain line (existing)' Right where the arrow is pointing is where my vent pipe to roof is attached. That's not going to work????

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Old 11-03-2012, 10:04 PM   #5
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Ah ok I see, yeah that should work fine then. As long as the drain to vent isn't over 8 ft for 2" pipe your good to go.

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Old 11-04-2012, 01:10 AM   #6
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No, that won't meet code. Even if the riser for the new kitchen drain is within 8 feet of the vented main line, you still will have an Strap. You will have to install an air admittance valve under the sink.

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Old 11-04-2012, 01:41 AM   #7
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Ah yes that's true, I see what your saying, because then the fall is way too much and s traps the drain. I had a brain Fart for sure.

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Old 11-04-2012, 02:24 AM   #8
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Some days, my brain IS a fart.

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Old 11-04-2012, 01:45 PM   #9
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Not sure what that is, But I will research it. Thanks

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Old 11-04-2012, 02:22 PM   #10
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Okay, I see what it is and how it is used. Seems easy enough.



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