Its hard to get in there without digging out first. I'll have to look and see if I can get a better view of where things go.
I *think* the first picture is the soil pipe from the toilet coming down in to a T and then the pipe off to the left leads to the main vent pipe.
I'm guessing the fitting in pic 2 should probably be a sanitary tee. Now that I'm looking at it and the incline. I think that the pipe going north and inclined up is the vent pipe and that it just terminates under the house. It is likely for the washing machine. Actually... That might be the shower. My late plumber mentioned something about things not being hooked up. He told me that the tenants *really* effed up the plumbing on the house. He was going to re-do it all but he wasn't able to when his health declined. I'm not seeing a P-trap for whatever that fixture is. Oh wait, when I tilted my monitor I could see that the northbound pipe merges with an ABS fitting and then goes up in to the house. I see a water supply line nearby so that is probably the old lavatory drain. So, it looks like the lavatory and shower were tied together but I don't know if/where they vent.
I need to get a better look at what is going on with the pipe that comes up just west of the toilet pipe vent and wraps around to the east. Maybe it attaches in from the side. It's a rather strange setup.
Maybe the pipe coming straight down next to the empty milk jug is the washing machine one... I'm having a hard time figuring out the layout above. I'm thinking maybe that is too far over though... gah.. I really need to figure out how to get some measurements to line things up and to work out where water supply lines are vs lines just carrying wires or cables. I know I had to crawl around under there running some phone lines from one end of the house to the other, and had to run some ethernet cables as well. (I was nominated for that job since I was the only one at the time slim enough to fit).
I know the water supply lines should be CPVC or copper or something other than PVC. I also know that they should be above the waste lines and never below. And they are supposed to be at least 12 inches away from waste lines so that there is no chance of contamination (at least that's what I was reading in the Louisiana plumbing code).
I see what you mean about the ABS hooking to the PVC. It happens in more than one place as near as I can tell. I don't know why. I don't know if that was part of the original plumbing or if the tenants did that crap when they messed up the plumbing.
I think I see the drain for the old laundry sink in the last picture, but I don't know why it would run toward the east unless it just terminated in to the ground or something....
I remember when we first moved here, there was some large barrel of grease buried in the ground and the kitchen sink emptied in to it.
I also remember when I was a child, my father was showing me the different pipes (pvc and cpvc). He said the white one was for cold water and the yellowish one was for hot water. The more I'm learning the more I realize my father didn't know as much about plumbing as I'd thought. LOL. I'm sure if we'd had the internet back then and he'd been able to just look up plumbing codes that he would have known that pvc couldn't be used for potable water supply lines above ground.
Thanks for the reply. I will have to make a note to gut the ABS stuff and replace it with PVC so that everything will mesh properly-- and make sure that I can get cpvc for the water supplies. I'm just not sure if I can tie in pvc to cpvc. I've seen fittings for sale on homedepot website, but I don't know if they can withstand the pressure properly or what adhesive to use.
I've been told by a friend that the other plumber in town (the one I've never met) doesn't actually do the labor himself and he refuses to dig (apparently he doesn't like messing with sewage). What he did when a friend hired him was sit there and tell my friend exactly what to do and then charged him for it. Not sure how much he charged though since my friend was doing work for his uncle and the uncle footed the bill. I'm thinking of working out a similar deal if that is allowed.
Edit: I realized that the picture of the location of the exterior part on the east side was not accurate. Its a bit more north than in the original picture. The hole is for the dryer vent. For some reason the cover would not stay on after we had the siding done.
I used the flattened mountain Dew box to lean on so I wouldn't get as much dirt on my pants. So these photos were taken to the right of the support thingy (not sure exactly what it is called). The water line is for the toilet water supply.