Very carefully drill a hole by each end of the split then gently grind a "V" shape in the split and then use a Cast Iron welding rod AFTER pre heating the base mental and allow to cool naturally as not to thermo-shock the metal
Cut out the old piping and caulk a new cast iron bell and spigot with lead and oakum and test
Demo a section of the wall.
You must break or cut the wall at that point. No other option
This depends on the size and the location of the leak. It depends because a leak on the straight piece of the pipe will differ from a leak on the joint of the pipe. It also depends on the corrosion of the pipe and the extent as to how bad it is.
It's not the toilet, there's a blockage in the pipes some where after the drain pipe from the toilet joins up with the drain pipe from the tub.You're going to need to have the pipe snaked.
To fix a leaky sink drain pipe, you can start by tightening the connections with a wrench. If that doesn't work, you may need to replace the washers or gaskets. If the leak persists, consider replacing the entire pipe or seeking help from a professional plumber.
Would depend on the material the piping is made from
Welding with cast iron welding rods
Your washer drain may be overflowing due to a clog in the drain pipe or a malfunctioning drain pump. To fix it, try clearing any blockages in the drain pipe using a plumber's snake or a mixture of baking soda and vinegar. If the issue persists, you may need to replace the drain pump. It is recommended to consult a professional plumber for further assistance.
Cast Iron pipe can SOMETIMES be fixed by coupling it to the pipe using a rubber coupling and worm clamps. This rubber coupling is sometimes referred to as a "rubber boot". You should always check your local plumbing code first to see if what and where you are replacing can be remedied by this method. You would first need to cut the cast iron pipe section out which you want replaced. There are a few different devices and blades made to achieve this depending on what tools you have access to. The most basic can be found at your local home improvement center or plumbing supply house such as a reciprocating saw blade meant for cast iron. Once the section of pipe is out, you should be able to maneuver the boot or boots and pipe into place and tighten the clamps to fit snugly around the cast iron and PVC. The days of oakum and leading cast iron pipes is long gone :)
More information needed. Is it visible, is it underground, is is plastic, is it metal pipe - -
To determine if your washer drain pipe is leaking, check for any visible signs of water around the pipe or listen for dripping sounds. To fix a leaking washer drain pipe, you can try tightening the connections, replacing any damaged parts, or using plumber's tape to seal any leaks. If the issue persists, consider contacting a professional plumber for further assistance.