A client in Dunblane had problems with his garden drainage, I quoted him for the work and he was reasonably happy to award me the task of fixing it, the plan involved digging a trench around the building, bury a drain pipe all the way (about 25 metres/yards) and cover it with gravel, all the slabs had to be lifted, jet washed and repositioned at 90 degrees, apart from the front of the house that had to be re-levelled.
A total of three bulk bags of gravel, one bulk bag of Sand was needed to complete the work