We usually see piping expand up the side of the residence as well as course outside around the soffit as well as seamless gutter, airing vent over the roof edge. Sometimes we see a system that does not expand all the way up the wall surface, but as long as it does not air vent near an operable home window, that serves. You do not want radon being aired vent from the lower level, then simply blowing back right into the house through an open home window. Make sure this piping remains in great condition and the departure factor is not blocked in any way.