I need advise.I have recently laid new block paving in my garden.Same area we have rain water gully or drain.gully looked ok so we thought we clean it later.We left some area around without block paving.today when i tried to clean it i noticed gully was broken infact there is no soil pipe around it.Rain water was going directly into ground.There is no way we can trace pipe.I was thinking something else.we have toilet pipe nearby i wander if 2.5 inches down pipe can be reduced to 1.5 inches then fixed to 4 inch pipe.I have been to few builders merchants but nobody stocks reducers.does anyone can suggest any solution or if know any place we can get reducers to1.5 inch waste pipe then it would be much easy.thanks.
