Can I run the kitchen sink waste pipe, straight into the toilet stack outside?

[tommyg01]

Hi All,

I am looking to do away with a horrible looking Gully/Drain outside my side door (actually used as the front door). The kitchen sink waste pipe comes out through the wall just above the gully/drain and I am hoping, I can just extend the pipework around the wall and do a cut in on the soil pipe. Is this allowed regulation wise? Would I need to run the pipe at a slight slope downwards going towards the stack?

TIA

Tom

 

[cr0ft]

If course you can. If the soil stack is already built then you use one of these to connect it in.

110mm Strap on Boss Adaptor (50mm Ø Boss)

You can buy reducers that sit inside the boss to reduce the 50mm Diameter boss down to 40mm for a kitchen sink waste pipe.

The required falls are all written down in Part H of the Building Regulations but go with a fall of 18mm per metre and you will be fine. Remember to clip it to the wall to stop it sagging over time.

 

[tommyg01]

That's good news, all I have to do now is find a website the sells all the bits (pipe, brackets etc), in Grey and delivers.

Thanks

Tom

 

[PhoenixServices]

Pop down to your local plumbers merchants tommorrow morning.

 

[tommyg01]

Pop down to your local plumbers merchants tommorrow morning.

Don't have one, hence having to shop online.

Tom

 

[dancinplumba]

Or get a plumber in to do it for you, but then again what's the point

 

[tamz]

Plumbers are expensive Steve and are all rolling it in :lol:

 

[cr0ft]

If you end up modifying underground drainage this work is notifiable to Building Control as it will need to be tested properly prior to backfilling. Clearly to remove the gully you will have to modify the drains! Forgot to mention this before!

 

[tommyg01]

If you end up modifying underground drainage this work is notifiable to Building Control as it will need to be tested properly prior to backfilling. Clearly to remove the gully you will have to modify the drains! Forgot to mention this before!

Oh that's a pain. I have 2 gully/drains in a small courtyard area, 1 of which I planned to seal over. I guess I will have to ask my local building control.

Thanks

Tom

 

[tamz]

If you end up modifying underground drainage this work is notifiable to Building Control as it will need to be tested properly prior to backfilling. Clearly to remove the gully you will have to modify the drains! Forgot to mention this before!

Your wrong there. No test required when connecting to existing unless it is chambered at the connection which isn't necessary either.

As far as building regs in England go with this one i'm not sure but up here it wouldn't be notifiable.
Then again we don't need to notify boilers either.

 

[tommyg01]

Your wrong there. No test required when connecting to existing unless it is chambered at the connection which isn't necessary either.

As far as building regs in England go with this one i'm not sure but up here it wouldn't be notifiable.
Then again we don't need to notify boilers either.

Emailed my local council this evening, let's see what they say.

Tom