I'd like to install a toilet in my basement. There is a drain that could be used for one but it is located under the stairs and therefore has no access. There is also a floor drain in what is now the laundry room which is the main drain if the basement were to flood (which has never happened). Is it possible to place a toilet directly above this drain? It would mean that this drain wouldn't be available any longer in the event of a flood, but the other one would still be (although the floor does not slope towards that one). Is there anything preventing me from doing this? What does the code state?
No you cannot use those drains. A toilet requires both a drain and a vent to facilitate ther removal of sewer gasses when it flushes. In addition a toilet requires a minimum of a 3 inch horizontal drain. Even though the opening of the floor drain is large, the actual pipe servicing it is only 2 inch. If you put a toilet on it, you will have nothing but problems. The only way to install a toilet properly in a basement, is to break the floor and tie into the main soil line, then retie the vent system into the existing venting system. Get a book from Black and Decker on plumbing, it will go over all the basics of a plumbing system. Good Luck Raymond Plumbing Prof Anoka Hennipin Tech College Minnesota
vent pipe noiseAfter flushing toilet, while tank is filling up... 4 REPLIES