For several reasons, the only way to deal with my blocked soakaway is to sneakily connect the rainwater downpipe into an adjacent inspection chamber.
Three questions:
1 - The chamber is rectangular concrete and I will come through one wall, above the invert, how do I seal the entry? This pic shows the chamber2 - If I just end the pipe after it has entered the chamber it will dump against the flow, so I plan to have an elbow inside the chamber so the rainwater drops vertically on to the invert - are there any alternatives? (I can't get through the other sides without several bends)
3 - What's the name for the type of trap that a downpipe goes into (the type without a hopper)?Thanks.