My extension has been up for some years but I've never got around to installing a soakaway - at present rainwater goes straight into a butt which drains onto the garden via a hose. The council have written saying that I need a soakaway so I'm about to start. I understand that it needs to be a minimum 5m from the building and that the hole should be a minimum 1m3 but I'm not too sure about the pipe depth - does this need to be a minimum depth under the patio/decking ? If the soakaway is 5m from the house and the pipe enters it halfway down (0.5m), incorporating a fall in the pipe, I can see that it will be quite near the surface at the house end ?? I have looked at the pavingexpert site and am not much the wiser so if anyone can give me any hints or tips I would be most grateful.
Many thanks,
Franko.