Today was my first day exploring the other side of the wall, where I intended to locate the second trench.
I pulled up a couple of stairs so I could access the area.
While sitting under that space I reviewed the current conditions:
My intention was to remove all the cast iron pipe from Trench 2 back to the vent stack.
HOWEVER.
The section that runs beneath the slab really concerns me, as I've no idea if I can remove it cleanly or not.
I realized that the "trenchless" cast-in-place pipe runs through the old pipe, so perhaps I could run a smaller PVC pipe through the cast iron pipe.
The connection would happen at trench 2.
Then I realized that there was one more version of this that would allow me to skip digging a 2nd trench.
I will NOT be able to get a hand-on look at the conditions under the slab at that point, but it would allow me to punt the ball into warmer weather.
It would also allow me to add a clean-out, something it's never had.
With a clean-out in place, I can rent a drain camera and do a full inspection on my own.
So what do you think?
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