More pictures....https://imgur.com/a/HZNd5y6

I have fixed other pipes before, but not the main drain pipe.

Water is leaking from the blue lined area. How extensive is the damage? How much effort would it take for a handyman or plumber to fix it.

 

It looks like someone glued an ABS fitting inside the cast iron waste pipe.
Probably because the flared end rotted off.

I'm not sure of the correct way to fix that but it would seem like the concrete needs to be chipped out to get to solid pipe and then a rubber coupling may be needed.

Another thought......
Fernco makes a coupler that goes into the cast iron pipe and then the ABS pipe would go into it.
The cast iron would need to be cleaned up so that it was even.

 

You would need a hub for that.

There is no hub.

You most likely need to dig outside and replace section coming into the home..

You need enough pipe to make a clean cut. I dont see that happening with what you have now

 

Just went through a fix like that. you need a solid piece of cast iron pipe to connect to. Unfortunately, as Mike mentioned, you need to dig outside, cut the pipe back to where it's solid, and replace from there inward.

Someone tried to fix it with a lot of ABS cement. You mightbe able to get another few months out of it using some JB Water Weld if it's just a drip... but it's certainly not a long-term fix. In my case, trying to patch it just disrupted more of the rusted cast iron and caused a bigger leak.

Good news is most places allow PVC/ABS for this, so it's a reasonably easy project other than the digging.

 

Before https://imgur.com/a/HZNd5y6
After https://imgur.com/a/D2HNAlx


I got it fixed. The plumber pulled the PVC pipe out from the cast iron. And cleared some of the foundation with a jackhammer. Used a rubber coupling to join a new PVC into the existing cast iron.

I'm don't remember whether if he cut the tip of the cast iron pipe at all. I just remember he said the rusty cast iron is not a problem, because it has held up for 100 years already, and it will still be good.

What do u think about the project?

 

Looks great! I don't fully agree with the 100-year statement... Cast usually lasts around 80-100 years, so it's getting close to the end of its life. But, I wouldn't go digging and replacing just because it's close. Just don't be surprised if it needs to be replaced at some point in the near future.

Technically, that rubber coupling should probably be a shielded coupling, but it may be allowed under your local codes... and regardless, it's not something I would worry at all about.

Good fix!