Sink waste to underground drainage?

[flanagaj]

when connecting an internal sink waste to soil pipe, do you have to have a bottle gulley outside or can it simply connect to a sweeping 90 degree bend out through the building and then connect to the main soil pipe with Y joint?  I am anticipating someone telling me that even though it's only a sink that feeds that section, it still needs to be rodable.

 

As we have an ACO drain running around the perimeter, the bottle gulley won't work as it will be pushed further out from the house.

[Nickfromwales]

32 minutes ago, flanagaj said:

when connecting an internal sink waste to soil pipe, do you have to have a bottle gulley outside or can it simply connect to a sweeping 90 degree bend out through the building and then connect to the main soil pipe with Y joint?  I am anticipating someone telling me that even though it's only a sink that feeds that section, it still needs to be rodable.

 

As we have an ACO drain running around the perimeter, the bottle gulley won't work as it will be pushed further out from the house.

It's supposed to be rodable outside, or inside, if solids are present (food waste), but if this is a basin, then you can likely get a deviation from the BCO (if there's one to pacify?).

[flanagaj]

41 minutes ago, Nickfromwales said:

It's supposed to be rodable outside, or inside, if solids are present (food waste), but if this is a basin, then you can likely get a deviation from the BCO (if there's one to pacify?).

It's a kitchen sink, so I guess that will be deemed food waste.  Looks like I'll have to have another IC on the drainage run.

[Gus Potter]

2 hours ago, flanagaj said:

It's a kitchen sink, so I guess that will be deemed food waste.  Looks like I'll have to have another IC on the drainage run.

Post a sketch of what you propose.. that is worth a thousand words. Draw it on a bit oif A4.. take a photo and post.  We won't test you on your drawing  skills!

 

I think you are getting yourself in a bind, the solution is probably simple. 

3 hours ago, Nickfromwales said:

It's supposed to be rodable outside, or inside, if solids are present (food waste), but if this is a basin, then you can likely get a deviation from the BCO (if there's one to pacify?).

This is confusing. Let's see a sketch first. 

 

[Mr Punter]

Tee off the below ground.  Come up to near finish level and use a 110 to 40mm reducer for your sink waste.

[flanagaj]

12 hours ago, Gus Potter said:

Post a sketch of what you propose

 

 

 I cannot propose anything as I am trying to understand how I'd have a back inlet gulley when I have an ACO in the same place.  TA obviously didn't consider this detail.
 

[Russell griffiths]

Easier to stick a 300mm chamber outside, straight from that under walls into a rest bend and then up to floor level under the cupboards.