drainage

[mfgs]

I have got to run a new soil underground to a ground floor bathroom being put in. There will be a toilet, basin, bath etc all connected. I need to connect into the manhole with this pipe, what is the correct way of doing this? I have never had to do it before so want to know exactly what needs to happen. Will I also need to try and site an air admittance valve in the bathroom?

I have attached a couple pictures of the existing manhole.

 

[gasmanrob]

You need to connect into the clay yes?

Dig down cut in an inspection chamber further back use fernco collar to join old and new then use your branch to run back to bathroom and if the other stac near by is durgo'd you will need to vent it

 

[mutley racers]

That pipe that runs high and drops down is it soil? If so is it legit to run it like that? Rather than digging right down and feeding it through the concrete lip at 45?

 

[mfgs]

That's from a rainwater gully, im pretty sure you cant connect a soil like that.

That branch on the existing which you can see, I believe is connected to and old outside toilet which is no longer in use. So I may try and dig up that and connect on to it which should save a bit of time. Is a fernco coupling ok to connect on to the old pipe under the ground to be concreted over or is there a better fitting available?

The other stack connected is vented so a durgo should be ok for this bathroom im adding?

 

[mutley racers]

I thought you were not allowed the soil to drop from high into the chamber. That branch looks high? Well that's what the building control guy told me

 

[mutley racers]

Oh sorry mate, I see what you mean. The one already connected to the main soil run. Doh silly me

 

[gasmanrob]

I've always used fernco to connect on they do one that is sized to take clay also when back filling the first few inches of back fill I use pea shingle so if anyone digs in the future they know there's summit there and yeah aav should be fine

 

[mfgs]

Thanks rob, that's a big help. Always like to get reassurance I am doing things the right way when I have no experience in it.

 

[Ermintrude]

You need a backdrop

 

[mutley racers]

You need a backdrop

I was trying to find the link on the one you posted ul when I asked but cannot seem to find it and couldn't remember what it was called. Thanks again