I want to fit a bath and toilet on the ground floor. I need to lay all new drains for it. Can I terminate the 110 soil pipe with an elbow to bring it up to floor level and connect the bath waste to it and then connect the toilet a couple of feet downstream using an eqal tee? Are tee connectors available with a slow bend or wouldn't that be necessary in this case. It has got be seen by a BCO. Also, do I only need one vent pipe for the whole system? there is already one on the other side of the house. Any answers please?