Not normally. Usually the cast iron piping ends at the outside of the house. It is more expensive than alternates, and cast iron is used inside. Outside is usually asbestos concrete, clay, or more recently plastic piping.
Water mains. Sewer line.
By cutting in a cast iron Wye so the flow enters the sewer line (soil pipe) at a right angle
Not exactly a sewer main normally flows by graviety and a forced main is a pumped system
Floor flange, cast iron ,brass with floor flange bolts (brass) wax gasket and make sure the line is vented
What do they insure and how much? Normally I would say save your money
Sewer Line The Woodlands
With a sewer line locator of course
Sewer Line katy TX
Sewer Line Cypress TX
Sewer Line Pearland TX
Cast Iron
The way you ask this question is too broad. Which part of your sewer pipe needs replacing? Exposed pipe in your basement or crawlspace is too simple for you to be asking about. If you mean the sewer pipe that connects your house to the city sewer (generally under the street) you have a big task. Depending on what part of the country you are in, this section of your sewer pipe can be anywhere between 4 feet and 20 feet deep. In either case you'll need a backhoe to dig it up.