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Relocation of wastepipes on concrete Slab (Bathroom Reno)

I'm starting to do renovations on my laundry, toilet & 2 bathrooms.

Relocating and shifting the water inlets is quite simple as I'll be taking down internal walls (re tiling the whole bathroom floor & walls) - thus a plumber can do this once I pull the walls down.

My concern is around the relocation of the waste pipes (40 -50mm) given I am on a concrete slab.

- Shower waste will stay as is

- Bathtub will be relocated (thus waste pipe needs to be moved)

- Vanity will be floating vanity & relocated

My understanding is I will need to cut the slab to re plumb the waste pipes, however I'm hoping I can cut a linear line from the new waste outlet on an angle of more than 12.5degrees (for fall), into the existing waste pipes (Yes I'll get a plumber to do the actual plumbing work), however I'd like to know whats involved.

Photos below for reference (Green Circles are proposed waste outlets, Blue Circles are existing waste pipes)

Cheers

Ash

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BIM_Engineer

@AshY
Bathroom renos are all the rage
Unfortunately your photos aren't showing?
Your can hire tools at Bunnings Hire Shop

Also check with your Coucil building department

Removal of structural load bearing walls may require engineering details and certification

AshY

@BIM_Engineer links updated. thanks.

Jason

Thanks @AshY.

It might be better to imbed the images in your post as not everyone can access Photobucket. If you edit your post, then click the Insert image button on the text editor you should be able to add them to your post.

Jason

Thanks for updating those images @AshY. Much appreciated.

Hopefully community members with plumbing experience like @LePallet might be able to assist.

Jason

BIM_Engineer

@AshY Check out

DIY Bathroom Renovations

It will be more of a case of installing new pvc Pipe and fittings than trying

to connect to existing waste Pipes inside the bathroom

I suggest you leave it to a plumber

LePallet

Hey mate,
I think you are looking into this too much, if you have organised a plumber then best thing to do is wait for him because there will be more than one way of doing this. This photo doesn’t show a lot, but there is no reason why he won’t Chanel a cut from the new to the existing and Just Connect into There, and obviously be concreted back up.

Jason

Hi @AshY,

Hope all is well. Just wondering how your project is progressing? Let us know if you need a hand with anything, and we look forward to seeing some progress shots of your renovation.

Jason

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