Square Downspout into 100mm internal clay underground pipe.

[john306]

Hi, I've just swept cracked concrete away from around downspout at side of house, and it came away in a few lumps.
Pushed around the side of the downspout was plastic bags and someone just cemented on top of the plastic around the downspout.
I'm trying to locate a 100mm grid drain that will push fit into the old clay pipe but can only find 110mm fitting.
The top of the 100mm clay pipe is only
40mm ish below slabs height.
Any ideas appreciated.
Thank you

 

[john306]

1.Photo of problem.
2.What I'd like to fit in it's place

 

[Hugh Jaleak]

May need a bit of creative alteration to space the downpipe from the wall to line up, but one option is https://www.screwfix.com/p/floplast-rainwater-adaptor-square-65-round-68mm/38593

Ideally need something with an offset socket, for the downpipe, but I think you will struggle to get anything that will fit inside the drain.

Alternatively, fit a McAlpine DC-1 into the clay spigot, then that will take you to a 110mm plastic socket, and you can go from there, but will look a bit bulky and not very aesthetically pleasing above ground.

 

[john306]

Thank you.
I have been around 3 local builders/plumbing merchants including Travis Perkins this morning but they were clueless.
If really like to fit the drain type in the photo, but may have to go with the Screwfix adapter you linked.
Thank you

 

[Hugh Jaleak]

Ok, if you want to fit a Hopper it's possible, but as I said previously, wont look brilliant!

Fit a McAlpine DC-1 into the Clay drain. Then glue a short piece of 110mm pipe into the outlet socket of the Hopper, cut that to length to fit the socket of the DC-1, and trim downpipe to suit. https://www.screwfix.com/p/mcalpine...3XzPFnc3XXbskB-Oj3RoCgcQQAvD_BwE&gclsrc=aw.ds

 

[john306]

Looking at the DC1 fitting, there will be about 70mm sticking out above my 100mm pipe before I've got the hopper in place.
Like you said it won't look good.
Looks like the Screwfix adapter is the only alternative, but that's still 110mm dia, so unsure if it would fit easily?

 

[john306]

I decided to have a dig around the pipe and see what was there.
What a bodge job...
Plastic pushed in around the pipe again.
None of the broken pipes were what I did.

 

[Hugh Jaleak]

What are you left with now? That looks like Hepsleve clay drainage, so I'd get a appropriate clay to plastic coupler, and replace what you've removed with plastic. If its a Rainwater drain, (not a combined sewer), then you dont need a trap,, and can make a direct connection to the drain.

 

[john306]

1st pic what it's like now.
2nd pic what it was connected up like.

Sorry missed off another plastic connector that fitted between the pipe in the ground to the 3 way mess.

I'm not sure whether it's combined sewer or not. Never smelt anything around that area in the past.
Might be the plastic wedged around the pipe that kept the smell in.

 

[Hugh Jaleak]

You've got the room by the look of things, fit a bend onto the clay spigot you've got, short piece of pipe and drop a Bottle Gully in, will cover all bases then.

 

[john306]

Sorry I'm lost at what I'll need to connect all 3 pipes together (which are at different heights/directions) and line the top of bottle gully with the top of the slabs in that not big space?

110mm Bottle gully I can get from Screwfix.
Grey pipe in photo is for 110mm.
Clay pipe is 100mm/4in internal.

Hoping this flexible adapter will connect 100mm clay pipe to 110mm plastic so that's a start.

Thanks for sticking with me.

 

[Nige F]

Have a look at the Osma bottle gulley with rotatable top and extra inlets

 

[john306]

I tried the bottle gully option, but I really haven't got much room to play with and that would have ended up way too close to the clay pipe to connect.
That's probably why it was botched originally.
My final decision was to just connect the roof guttering downspout into a grid hopper, then 110mm pipework into 100mm clay pipe with McAlpine DC-1 (thanks Hugh).
The grey pipe from conservatory guttering was disconnected totally and I'll now reconnect into house roof downspout at just below conservatory guttering level.
Just need to fill in everything and relay slabs.
Thanks for assistance both.