Moving water supply and sink waste location concrete floor

[Edible Roadkill]

The water supply for my house comes up out of the kitchen floor and planning on renovating the kitchen soon we’d like to move the plumbing by about a meter or so onto another wall.

This might not sound worth the hassle but means we can open the room out from the current U shape configuration of kitchen units and were really keen to do it. Basically there’s a wall already been taken down between where the plumbing currently is and we want to move this to open up the room.

The floor is solid concrete and I’m not entirely sure which direction the water pipe enters the building.

I’ve managed to find some reading on Google and it suggested to dig down from outside about 1m and to make a new connection into the house from there. That sounds like a slog. My thoughts was to cut a channel with a stil saw and chisel it out. The slab from the house plans I have is 200 deep, unfortunately I don’t have the plan showing the service pipe runs.

The waste might also pose a problem and a larger channel need made so not to introduce bends.

Anyone ever done this before on a solid floor ?

[caziques]

Jackhammer, quicker than you think.

[Origin Unknown]

...until you find the rebar mesh. Or two as I had in my slab!

[Edible Roadkill]

So you reckon no need for cutting, just bring the jackhammer in ?

Regards rebar I’ve a drawing showing only reinforcements used on the garage slab so hopefully won’t encounter any.

[Regbuser]

Think about the backfilling for the floor.
Shingles for pipes > soft sand compacted > DPM patch > s s again > type 1 / rebar > concrete > top finish
At slab level you will have to cut out about 100 to 150mm either side of the pipes, so that you can put a DPM patch / service pipe entry seals in, plus a bit of 2 part sealant.

https://www.dpcproductsdirect.com/product/service-...