Norman, thank you so much for your question. Without having a better idea of how the vent pipe makes it to the roof (straight up or bends while making its way up) I can not accurately advise you on th ... read more
Yes you really should. With freezing temps, frost, and the funny movement of the earth and setteling its best to just do it right the first time.
Pour a 4" slab with some 18" OC Rebar (18" on center). ... read more