Hi, plumber installed a new soil pipe for new bathroom 6 months ago, he dug in the driveway to the manhole and fitted new thick pipe quite deep, then filled it with rubble after the building inspector visited.
I was told the best is to remove rubble, put hardcore (little stones) above the pipe, then put asphalt on top (is this Macadam?).
But will this be safe to drive over and not break the pipe?
