A ring of oakum is first forced into the joint, and then set with a calking tool until hard. After the oakum is firmly calked, an asbestos rope is placed around the top of the joint, leaving a small opening at the top for pouring the melted lead. The melted lead is then poured, and after cooling, firmly set down with the calking tool, care being taken to thoroughly calk the inner and outer edges of the lead circle. The lead in a 4-inch soil pipe should be about 1 inch deep.