New gully required, next to wc - But how to get it into the ic?

[PatioPotter]

First post - great forum!

I wonder if anyone can help with a gully question - I'm 2/3rds through putting in a new patio, with loads of help from this site, and I'm working my way around the house and up to the back door in an L shape.

Next to the backdoor is a small cloakroom with WC, and the soil pipe (a clay one I think) feeds into an inspection chamber about 1.5 metres away. So far so good.

The back wall also has an outside tap on it, and the sink and washing machine (from the garage behind the cloak) drain through a closed 30mm ish waste pipe under the soil and into the inspection chamber also.

I'd really like to incorporate a gully into the patio to allow any water from the outside tap to drain away properly instead of running onto my lovely new patio as it does at the moment, but herein lie my problem

What's the best way of joining a new gully to the not too far away inspection chamber? If the answer is to cut the existing soil stack and join it into that, has anyone got any advice (pay a plumber - how much etc.) and are there any building control implications?

I don't think there are any "spare" inlets in the IC - it's a 1960's build and the bottom of the chamber is a clay type construction.

The existing waste pipe runs quite shallow - I guess running the gully into that would be a "bad idea"

Any advice much appreciated.

[seanandruby]

Here

[PatioPotter]

Thanks - just the job. Cutting wise, will a 230mm angle grinder do the job, or would something else be better? And I'm guessing the gully will need a rodding point adjacent to rod down to the IC?

[flowjoe]

PP

Best uncover the length of drain you are connecting into first, any bends, other junctions or concrete surround to the original pipe make it a whole new ball game.

If you install a roddable gully there will be no need for a rodding eye, if you run the gully direct to the chamber ditto.

Cheers

[PatioPotter]

I'll get my spade.