montana
New Member
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.

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.