Need a quick fix for an earlier bodge - Waste water Drain

[wytco0]

My Mums outside waste trap where her washing machine vents dirty water has crumbled due to plants and the fact that 25+ years ago it was done as a quick and dirty bodge !!!

I have just removed most of bits to find:

1) There isn’t actually a trap at all, I assume there should be?
2) The bit under the grate (gulley?) is just a small cement chamber with a bit of black downpipe (I think as its about 70mm) which has been cemented in the bottom and which is connected to the foul water drain a couple of meters away.
3) The cement chamber, which has fallen apart, was just done straight on top of un-compacted soil.

I hate bodged jobs but most of the drains around my mum’s house (waste and foul) are going to be replaced in a few months as we are building a new house nearby and it’s a good opportunity to replace her terrible drains at not too much cost.

So I am looking for a quick and dirty solution. I had thought of just connecting the outside 40mm waste water pipe from the washing machine inside trap directly to the bit of 70mm pipe but I can’t find a connector that would allow me to connect a 40mm waste pipe to a 68mm? Downpipe. Does anyone know if such a thing exists?

If I can’t connect the pipes and I have to build a new trap, what should I do, is the following correct:
1) Dig out hole, compact and line with sand/gravel?
2) Build chamber with brick/cement/concrete? Or purchase if purchase what do I need?

Or does anyone have another perefrably simple option?

Lastly, could someone explain why every time I decide to do what I think is a minor DIY job it turns out to be much much more complex that I was expecting

 

[wytco0]

Did a bit more digging and found that the black plastic downpipe was pushed into a bit of ceramic pipe which is is fairly nicely attached to a gully.

I think the ceramic pipe is a proper underground type but I am not sure what I need to couple something to it, it has a lip with an inside diameter of approx 6.2 inch 160mm with the pipe inside diameter of 3.9 inches 100mm.

Now that I have dug all of the old collapsed drain out I think rather than bodge it again I will try and do a decent job, the only trouble is I don't know what I need to put in place.

To summarise I have a washing machine indoor trap with a 40mm pipe going through the wall to the outside drain, the bit that has gone is all the stuff from the ground to the ceramic pipe mentioned above.

I think I need some sort of trap but I don't know what or how I should install it.

If anyone can point me at any on-line resources or give any advice on how this should be done I would be very grateful.

 

[Hugh Jaleak]

Sounds like the original gulley was broken, so has been removed. Should be fairly straightforward to sort. Get yourself a bottle gulley such as this: ( http://www.screwfix.com/prods/28956/Plumbing/Underground-Drainage/Bottle-Gully-Circular-Grid ), bit of 110mm pipe and a suitable coupling from plastic to the clayware. McAlpine do one similar to a pan connector that should fit inside the clay pipe and accept the 110mm plastic, Wickes and Fernco do versions but you'd need to cut the socket off the existing clay pipe (carefully!) with an angle grinder to fit these.

Surround the gulley with a bit of concrete to hold it, and some peagravel around the pipes. If you leave enough plastic pipe to couple onto you can easily rejoin to this at a later date if you replace the rest.

 

[wytco0]

Brilliant thanks for the info, its starting to make sense now. Re the concrete for the trap, does it need to be fully concreted in or could I use a bed and then use the pea gravel round the rest?

Also do you know what the McAlpine conector is called? I had a look at their site but couln't find anything there, I will need an internal connector as It will be almost impossible to cut the collar off the ceramic pipe due to the position it is in.

 

[Hugh Jaleak]

Id put a concrete bed down, sit the gulley on it, level the gulley up, then haunch a bit more concrete round the base to hold it in place. Once this is set you can back fill around it, just keep any sharp stone or bits of brick away from the gulley.

McAlpine part no. DC-1 http://www.mcalpineplumbing.com/ Look in products, drain connectors. If its just water going through from a gulley then a pan connector could be used although bit of a bodge.

 

[wytco0]

Thanks Hugh, Found the connector and it looks as though I can get them from plum centre (nearby).

Hopefully i can install it at the weekend now that I know what to do.