Through wall waste?

[Captain5691]

Hi

If i am taking the sink and washing machine waste through the outside wall and into an open drain, are there any regs or considerations to take in to account?

i.e the height above the drain that the pipe terminates, or the height it comes out of the wall above the drain?

Cheers Ian

 

[John506]

Nope, just make sure it is level with the trap outlet to make things easier.

Also usually best to situate pipe below the gully grate (if plastic and able to cut).

 

[Hugh Jaleak]

Preferably pipe should terminate below the grating but above the water level in the gulley. This prevents overflows should the grid get blocked with leaves or other detritus, and allows the full force of the discharge to cleanse the gulley. (Iron grids can be replaced with plastic version, if its a 4" square grid they're about 99p!)

 

[Captain5691]

Thanks for that, i thought you could not draw breath without regs, so a little surprised.

The drain cover is new and plastic so i can cut a hole in that to allow the waste pipe to go below that level....