New toilet soil pipe connection

[mrmuddle]

Hi,

We want to fit a new loo in our utility extension (seems to have been built ~5 years ago), I've not popped a tile up yet but presume it's concrete like the yard. Hoping to avoid a lot of work I was wondering if it may be possible to make use of the drain right next to the wall?

This flows right into the same man-hole as the existing soil stack so I was wondering if there's anything which could be fitted to the existing gully, or dig it out to "convert" it, although I'm kinda doubting the pipe would be the correct diameter in any case.

Or any other suggestions on how to get from here:

Untitled

• mrmuddle
• 5 May 2014
• 1

to here:

Untitled

• mrmuddle
• 5 May 2014
• 1

.. would be much appreciated. Hope that's reasonably clear to show the layout, please excuse the mess, it's wash night.
Thanks for any help.

 

[ALCPlumbing]

I would expect the gulley to run in four inch to the manhole. You could check this by looking in the manhole and seeing what size the pipe is.

You could then leave the gulley in place and connect into the pipe that connects gulley to manhole by chasing out the concrete.

Or do away with gulley.

It should be 4 inch. But not necessarily. Check the gulley.

 

[Hugh Jaleak]

I'd be very surprised if the run from the gulley to manhole wasn't in 4" (110mm) drain. Only solution is to dig a bit out and see, assuming it is then you could come through the wall from the W.C. using a 90 ° access bend, before going underground to connect to the existing run from gulley to manhole.

Just ensure unless the run from the new W.C. connection to the manhole is dead straight, you provide access in case of problems. You don't want to be faced with a blocked W.C. only to find rods/jetting hose goes straight past the W.C. connection up to the gulley!

 

[ree]

I assume that the WC is going behind the wall on the left of the pic?

Your extension floor is concrete - no need to pop tile.
As above, any WC outlet would go horizontal through the wall and drop down in the yard.
I dont think a clean-out is necessary but you could use a 110mm bend with a rodding eye.

You would have to wire brush the old benching to prepare for the new benching entry which will enter in a swept curve back on itself.

Leave your extn gulley in place - you still have to dispose of the rainwater and washing machine discharge.
The high outlet in the MH wall is possibly the extn gulley outlet.
So, you will have four discharge entries and one main outlet in the MH.

If you are interested, there are a few more off-page items that might be of some future concern to you?

 

[mrmuddle]

Thanks for the helpful replies. It's correct that the toilet would situated back to the wall by the drain, it's not the ideal position, but if it saves digging everything up then it becomes the ideal position

Ree: The high outlet in the wall is strangely not the outlet for the pictured gully, both that and the other drain in the photos flow down the centre at the bottom. I was 99% certain the floor is concrete, gotta pull up all the hideous tiles regardless Certainly interested in any off-page bits that are likely to crop up, thanks!

But in generally what I'm gathering from this is if it's 4" pipe we find after a little digging, should be able to use it one way or another which is great news.

 

[ree]

Can you be more specific, and please dont use the term"right" unless you mean the direction RH or LH etc?

Three walls are on the pic - a LH wall, a rear wall and a RH wall. Is the WC backing on to the LH wall?

Can you post pics pointed down the MH showing: first, only the rear wall gulley flowing, and second, only with the RH wall gulley flowing, and finally, only with the flushed WC flowing?

I wouldn't start digging until you are certain of where and how you are going.

If the high MH wall outlet is indeed redundant then it has to be blocked off.