Advice would be appreciated

[montana]

My home’s old cast iron main line drain pipe corroded and recently cracked and collapsed just outside the house’s foundation (see photo below).



Though I am running into several issues in repairing/replacing it.

One is that the corrosion extended from outside to just inside where the pipe goes through the home’s foundation (see photo below)


So, the length of replacement pipe needs to extend thru the foundation wall into the basement.
But under the old (and still current) setup, there does not seem to be enough space between where the main line drain pipe enters the basement and where the vent pipe comes down into the main drain line to effectively secure a clamp.



The setup inside features a bunch of secondary drain pipes coming down into the main line drain to the right of the photo above, and I don’t like the idea of having to reset all of that.

I am looking for advice/suggestions on possible approaches to this problem from anyone willing to offer them.

 

[Diehard]

Can you get some estimates to fix it from local professional plumbers? If so, just find out what they would do to fix it. Then you can decide what to do from there.
Trouble is they would want to fix that sheet metal patch job as well.

I suspect, at a minimum, you would want to break out around that wall pipe.
Remove the lead from the wall pipe joint to remove the wall pipe.
A 4 band transition coupling may be a bit challenging for access to the band screws.

The proper way would to go back further and replace all that junk, including that vertical pipe with the sheet metal. In fact it appears that you already have a rubber coupling piecing something together at the far right of the picture.
In the long run it may be the easiest approach. Support all vertical pipes as required to prevent them from coming down. Typically at underside of hubs and with the aid of vertical pipe clamps.

Much easier to replace it all, to a convenient point, with PVC.