Hello I found this answer to the question... "How much oakum is required in 6 inch cast iron pipe before lead is poured into it?" From the Cast Iron Soil Pipe Association http://www.cispi.org/handbook/chapter4.pdf http://www.cispi.org/ Hope,this helps...
Nope
1- Cast Iron cutter2- Open the No Hub coupling3- Loosen the MJ coupling4- burn out the lead and pick out the oakum joint
Cut out the old piping and caulk a new cast iron bell and spigot with lead and oakum and test
Cast in place. Concrete is poured where at its permanent location. For example, a manhole cast in-situ will be formed and poured at the pipe connection. This is the opposite of pre-cast, meaning it is cast off-site and transported to its permanent location.
When I have to connect copper to lead "D" I usually solder the copper to the lead or wipe a lead joint depending on the diameter To connect copper to cast iron ,.... If there is a hub I caulk the copper directly into the CI with oakum and poured lead (molten) OR one can solder / braze a female adapter fitting and screw the copper into a CI female fitting
yes it can. kerosene lead melters were used by plumbers for many years. sewer drain lines were made of cast iron. one end of the pipe was a about half an inch larger than the od of the pipe. you put the pipe into the flared end of the next pipe and packed oakum down into the gap between them with a chisel leaving about half an inch from the top. then you poured molten lead in to fill up the rest of the space and used a special chisel and a hammer to drive the lead down on to the oakum and finish the seal. nowadays they use pvc pipe and glue. which is a whole lot easier.
Cast iron
Cast iron is, as the name implies, "iron" which has been "cast", or melted and poured into a mold. The material is usually not really pure iron but rather an alloy including carbon and (often) silicon.
NoMore information:When baking, you USUALLY do not preheat the pan. Some products, such as cornbread, benefit from a crisp crust. In that case, a greased cast iron pan may be preheated so that the batter sizzles when poured into the hot pan before baking.
This process is known as casting. Iron in particular is often cast to make objects.
Considering the waste inlet of the pipe of this pipe should be 4" possibly 3" you can buy an inside cast iron cutter .=You must measure the inside diameter and then buy /rent the one for the size you need THEN you can buy a new cast iron floor flange and use either a caulked joint (lead and oakum) or possibly a quick set type if the cast iron is no hub or standard weight=
It depends to some extent on what's cracked. A cast may not be required. A physician should be the one to determine whether a cast is needed or whether a brace or some other form of protection will be all that's required.