Underground connection.

[Thomo39]

Hi , can I put a t piece in the terracota pipe and connect from that t piece with some 110mm pipe into a rainwater gulley to take that 68mm downpipe?
I have a mixed drainage system so it all water goes into that main manhole but unfortunately all outlets are utilised

 

[noseall]

Hi , can I put a t piece in the terracota pipe and connect from that t piece with some 110mm pipe into a rainwater gulley to take that 68mm downpipe?
I have a mixed drainage system so it all water goes into that main manhole but unfortunately all outlets are utilised

Put a bend on it and tee it into his mate on the right or just direct into that gully.

 

[Thomo39]

Cheera for the reply, it's the front of the house so I'd rather not see the downpipe running horizontal across to the other, the inspection chamber is full , from a building control point of view am I ok to do what i suggested?

 

[Scally-Ho]

Depending on your location and waste water authority, it could be against the regs to connect surface/rain water into the foul drains.

 

[Thomo39]

It's all one system

 

[Scally-Ho]

It's all one system

In that case consider a saddle connection and drilling the clay drain to accommodate the mounting part of the saddle. Easy to do and saves all that faffing about.

Hepworth Clay Drainage – SuperSleve HouseDrain Saddle - Burdens

SuperSleve HouseDrain was developed specifically for ‘Around the House’ drainage, but is equally suitable for adoptable, commercial and industrial developments. It is the most modern and appropriate response to drainage requirements and is fully compatible with other SuperSleve products. All...

burdens.co.uk

 

[Thomo39]

Hi thanks for the reply, it's a plastic pipe , does the same apply

 

[noseall]

Cheera for the reply, it's the front of the house so I'd rather not see the downpipe running horizontal across to the other, the inspection chamber is full , from a building control point of view am I ok to do what i suggested?

If you pay storm water handling rates - then fine go ahead.

Just a thought: there isn't a back inlet available on the existing gully is there? Its a long shot and would depend how the existing gully is orientated or if it has a back inlet at all - but you could twin the new gully into the existing, if the positioning is favourable?

 

[Scally-Ho]

Hi thanks for the reply, it's a plastic pipe , does the same apply

Plastic pipe is even easier with a glue/strap on boss fitment.

110mm Strap Boss

Achieve a secure, reliable and leak-free connection with this Aquaflow strap boss - use it alongside a rubber adaptor to connect a waste pipe to a 110mm soil pipe. • Easy to install - suitable for 110mm soil pipes• Long-lasting - a reliable and leak-free connection• Black colour - a smart and...

www.toolstation.com

 

[Thomo39]

Yeah I'd seen that but wasn't sure if that was allowed underground where it wasn't accessible,.I've also seen the black rubber grommets as well which looks even easier.

 

[Scally-Ho]

It will really depend on your local regulations, but slyly, who is to know once the connection has been made and then overfilled.

Yeah I'd seen that but wasn't sure if that was allowed underground where it wasn't accessible,.I've also seen the black rubber grommets as well which looks even easier.

I've seen those rubber bung style connections perish in a short time, so you pay your money and take your chance.

I wonder if a 'tumbler' would be allowed into the inspection chamber?

 

[noseall]

Yeah I'd seen that but wasn't sure if that was allowed underground where it wasn't accessible,.I've also seen the black rubber grommets as well which looks even easier.

Be careful working in that short span. You don't have a lot of room for error or to work in. Nor will the pipes have much flex.

 

[Thomo39]

Hi , just back on with this issue as I haven't got round to it yet.
I have bought another gulley and ideally would just like to connect a piece of terracotta pipe from the outgoing socket of the new gulley to the spare outlet on the existing gulley.
However once I've dug down I can see the outlet has a smaller diameter hole so I'm not sure if it is purely for that size pipe only or can I drill a 102mm hole in that (it fits fine) and insert the pipe into that gulley?

 

[Hugh Jaleak]

All five inlets on the chamber are in use?

Yes, you can cut out the large Boss on the side of the gully and connect a 110mm pipe to it, it's what it's designed for. You'll need to use Solvent Weld cement to glue the new section into the Boss though to ensure a watertight joint.

Strap Boss connections are only for Waste Pipes, up to 50mm diameter, Rainwater is 68mm diameter, so needs to connect via a 110mm to 68mm reducer.

 

[Ivor Windybottom]

It will really depend on your local regulations, but slyly, who is to know once the connection has been made and then overfilled.

I've seen those rubber bung style connections perish in a short time, so you pay your money and take your chance.

I wonder if a 'tumbler' would be allowed into the inspection chamber?

A really terrible idea.

Firstly, a gully needs 110mm pipe and if you reduce it then it will block.

Never couple a downpipe to a sewer, otherwise you've just made a new sewer vent. The top of the pipe and all its joints (not airtight for downpipes) will stink for ever.

You were/are going the right way before the crazy suggestions above. Put a gully in to trap the smells, pour the downpipe into that.