Good Day?
Were to Start. I have a 1928 2 story House with only Bathroom on 2nd Floor.
The main waste line runs to the basement were there is a Y/T and Elbow that connects to a Sloped Hoizontal pipe that connects in to a HUB that goes through a wall to sewer line.
The horizantal Pipe about 5 1/2" long has about a 4 1/2" Crack that runs to the Hub in the Pipe that goes out Side. I would like to Replace this Pipe and while Replacing it Splice in to it to Plumb a Bathroom on main floor were there currently is no bathroom (Converting a closet to Bathroom)
So 3 Questions Best way to Remove Cracked pipe?
Best Way to connect PVC pipe to CASTIRON HUB.
Will I need a new Vent pipe for the new bathroom or can I use the Existing Stack as Vent Pipe?

Thank You
Brian:)

I had to break out those pipes a couple times and all I needed was muscle and a sledge hammer. I don't know anything about installing cause I am more into the demolition stuff, but you should be able to ask at a place like home depot.
Also, you can take the cast iron pipe to the scrap yard and get around $7.00 a hundred pound or do a scrapper a favor and let them take it off your hands.

I would like to Replace this Pipe and while Replacing it Splice in to it to Plumb a Bathroom on main floor were there currently is no bathroom (Converting a closet to Bathroom)
So 3 Questions Best way to Remove Cracked pipe?
Rent a set of cast iron ratchet cutters and cut out the bad section out.

Best Way to connect PVC pipe to CASTIRON HUB.

Use a shielded coupling,(see image) to attach the PVC to the cast iron. You may then cut in a wye or combo to pick up the new bath room. The new bathroom will vent off the lavatory vent. Let me explain. Most bathroom groups are roughed in like this.
Toilet connects to sewer main or the stack vent. Lavatory connects to toilet drain and runs a vent off the top the stubout tee out the roof or revents back into a dry vent in the attic.. The toilet wet vents through the lavatory vent and the tub/shower connects to the lavatory drain and is wet vented by it. This is a normal rough in and is acceptable both by local and state codes and also The Standard Plumbing Code Book in 90 percent of the country. Check your local codes.to make sure you're not in the excluded 10 percent.. The vent off the lavatory may be run out the roof or revented back into a dry vent in the attic or if you're reventing back into a fixtures dry vent you must make your connection at least 6 inches over that fixtures flood rim.

Will I need a new Vent pipe for the new bathroom or can I use the Existing Stack as Vent Pipe?
You will have to vent the lavatory anyhow and if the existing stack is a dry vent, (no other fixtures draining above the new bathroom) you may revent to it. Good luck, Tom