Hi new to TOH, nad have a dilema already. I was tryig to run some new plumbing in the basement for the washer and noticed that there is no floor drain. Previous owner discharged it into what looks like some sort of trap about 12 to 18 inches down into the foundation. There is some sort of line that is approximately 5" in diamiter at the bottom of this hole. THe problem is that i have no way of tying into the old cast iron soil stack. any advice would be much appreciated.