At least the pipes I have been dealing with at the "country" place are out in the open when you dig out around them to expose them. Here I was adding a run to another building and taping into the main where it comes out from under the slab. Had to dig very carefully as there are all the other utilities buried there too. Fresh water, propane, power, telephone and TV coax going to another building. I stuck a long sweep elbow in the existing pipe to tap into. Also added clean outs on both the black water and gray water lines for good measure while I had everything exposed.