This house was built in 1996. I do not know the details and do not have any blue print. I am in the process of putting in a bath and toilet in the basement. There are 5 pvc pipes one with 2" (in a small pit duck taped) 2" pvc from wall about three inches, 3" pvc from wall about 15" 4" pvc from wall about 16" and 2" pvc sticking out from the ceiling about 5 inches.