What a mess, wish people would do what they were supposed to do to begin with.
I'll start with the first drain, this is 2 inch cast iron original to the house. It's kind of hard to see but it's there. This came out of the house elbowed down and then elbowed horizontal again. The elbows are sitting there, the two inch pipe went into( and when I say into I mean into as in not connected) a 4 inch schedule 20 pipe <sigh>.... They used schedule 20 for whatever they fixed, no glue glue on anything...
All of the schedule 20 would have come out except of course it goes under the steps for the basement, this is one of those precast steps and I had no intention of digging it out so about 30 foot section of the schedule 20 stays. Water runs through it really well once we got it unclogged. Here's the new 2 inch pipe straight off the 2 inch cast connected right to the 4 inch pipe to fix that issue.
This next two pictures the two sewer pipes exiting the house. The PVC sewer pipe you see in front of the cast is a full 5 inches below it, see the ferrnco fitting in the second picture? <sigh> This apparently was part of the reason for the poor flush on the toilet. The one on the other 4 inch pipe exiting the house was worse and actually only partially attached. There wall has tar and plastic on it, I'm guessing the plastic is not original to the house. I'm guessing what happened is they dug out this part of the foundation and then installed the new pipe and the ground settled.
Moving down the house a they got about 20 feet from the septic and apparently there was PVC shortage....
They just left the old orangeburg in, becsue of either the settling or they never had the pitch right to begin with this is where the blockage was for the sink drains. I'm sure it contributed to the poor flush too. Of course water does not flow uphill. That's why the gravel is there becsue we had to dig a hole to flush out the sink drains. The sewer pipe also connected to this orangeburg and is parallel to it.
What's orangeburg? Well I guess you learn something new everyday. This is basically tightly wrapped tar paper used for sewer lines. Considering it was still carrying sewage 60 years aft it was installed not so bad...
When you get back down to the septic tank they switched back to PVC, the sink drains shoot off to the right. They elbowed under the septic tank line. In the following picture the PVC closest is the septic tank line going into the septic and the PVC about 10 feet away to the right is the other line for the sink drains.
We ran new PVC from the existing line just for the drains, this should solve the backup issue for the sinks because.... water is no longer going uphill. We don't know where the sink drains go but we'll deal with that if it becomes an issue. That got back filled .
The new sewer lines are already in but I don't have any pics yet, I'll post them tomorrow....errr later today.