Outdoor Sink Drain Pipe Fix?

[phykell]

Hi,

I just had to unclog an outside pipe which runs from a sink and wasing machine and exits the house as a fixed black plastic pipe which is positioned directly over a drain gully - image attached.

The reason it clogged is because the end of the pipe is very close to the drain gully - it was clogged between the end and the drain gully's mesh and I can't even remove the drain gully because it's so tight.

I don't know what the builder was thinking when he did this so can anyone suggest a suitable fix?

Thanks

 

[yorksbuilder]

Cut the pipe off 50mm above the gully grid
This will allow you to clear detritus from time to time

 

[Harry Bloomfield]

I don't know what the builder was thinking when he did this so can anyone suggest a suitable fix?

Cut a hole in the grid, and extend the pipe through it.

 

[yorksbuilder]

Cut a hole in the grid, and extend the pipe through it.

If you want all the gunk to go and block your gulley/soakaway/drainage system

 

[Harry Bloomfield]

If you want all the gunk to go and block your gulley/soakaway/drainage system

Why would it do that? Discharging, below the grid, is the normal way these days.

 

[yorksbuilder]

I know, but we dont know the OPs drain system or where it goes, and if they need to ask this question, just giving them simple advice on a quick fix without them needing any special tools or new parts.

Mine all discharge below the grid apart from one RWP that goes into a soakaway. I dont want anything going down there.

 

[Madrab]

As far as the regs are concerned, a waste pipe discharging into a gully should discharge below the grate level but above the seal but can only be used for grey water if the gulley is connected to a combined drain/sewer

Hence why most plastic gulley grates have waste/down pipe cutouts

 

[Hugh Jaleak]

That pipe is taking the flow from a sink and washing machine, so no way should be going to a soakaway!

Regs state that Waste Pipes should discharge below the grid, but above the level of the water, so the full force of the discharge is available to clean the gully. Cutting the pipe short, above the grid, will be a recipe for disaster, the discharge will go everywhere, soaking the wall and making one unholy mess!

Cut an appropriate size hole in the Grid and glue a 40mm coupler onto the end of the existing pipe, that should be enough to get it where it needs to be.