My house has a concrete slab foundation, and I am considering a kitchen renovation in which I would like to relocate the sink/dishwasher. I currently have a G-shaped kitchen with the plumbing located on a half wall that overlooks the family room. To obtain more kitchen space, I'd like to move the wall about 2 feet into the family room, as well as shift it a bit to open up another entry way into the kitchen. This would make the current peninsula with the dishwasher and sink into an island. I'm wondering what impact this will have on the plumbing? I realize I'll need a Studor vent for the stack since I won't be able to vent up to the roof. It would be ideal to run the plumbing in the toe kick to avoid digging into the slab, but the dishwasher would go where the current pipes are located. Can you run plumbing pipes underneath a dishwasher? (I won't have space to move the dishwasher to the other side of the sink.) Any advice would be greatly appreciated!

If you are leaving the sink and dishwasher where they are currently you may have little problems. However you have not clearlytold us how and where the sink drain lines run, do they go into the slab right below the sink?

Hmm, that's a good question. I don't know enough to tell exactly without doing the demo, but I believe the drain line currently goes into the slab where the sink is. More specifically, there's a 5-inch-wide half wall behind the sink, and the current drain pipe goes into the back of the sink base cabinet. I think the pipes are coming up from the slab into the wall and then into the back of the cabinet. Basically, I'd like to move the dishwasher and sink diagonally (in a NE direction if you're standing at the sink), and the dishwasher is to the left of the sink. The wall would be pushed back about 27 inches, and the dishwasher and sink would also go to the right about 21 inches.

Hello, you should take the wall panel off the ponywall opposite of the sink so you can have a clear idea as to what is behind the wall, you might be surprised at what you'll find, but at least you'll know what your dealing with before you demo your kitchen sink.good luck----Zeke