I would like to extend my driveway but it would extend over where the septic line is buried. Is this safe?

 

Is it the leach bed, or just a pipe leading to it ?

 

Done it, or atleast had it done by a contractor. My situation was I built a 3 car garage with out law suite above. It required tying into my existing septic system with an additional tank that also connected to my existing drainfield.
Here' the deal (and this is totally code, no B.S).Your Pipe is 3" Sch. 40 PVC, the plumber will need to "sleeve" your pipe with a piece of 6" thin wall in order for you to be able to drive over it without crushing it. The fact is that if you drive over the (either) the pipe that comes for the house to the tank, or the one from the outlet side of the tank to the drainfield you WILL eventually either crush the pipe, or dislocate it from the tank connection. The 6" green (thinwall) pipe is flexable to the extent that if (when) it is run over it will mash down a bit, but not put pressure on the actual drain pipe.
I run over my driveway pipe (which is around 65' long) EVERYDAY atleast once in a out with my trcuk and also over it with 6,000lb. tractor.
This is the safe way. Now this NEVER applies to the tank itself, drive over that with anything other than your lawnmower and you might end up inside it.

 

Fogot to mention, I know nothing about driving over the drainfield or tile line itself. I don't go in the actual drainfield area with anything heavier than a garden tractor, and don't recommend anyone doing so.

 

It is the pipe going from the house to the septic tank. I guess I need to rethink the location of my garage if I cannot pave over the buried septic pipe or dig it all up again to sleeve the pipe?

 

We just had a new tanksand drain field installed...(Drain field failed)

The sewer lines to the tank run down the middle of the drive for abot 100 feet then turn into the tank in the yard. The pipe is buried 4-5 feet down. It has been like this since 1964. Here in Adams County, Idaho it is OK to drive over your drain lines as long as they are 4 feet or more! Drain field is buried in the middle of the yard at about 8 feet deep!

Got pics of it if needed...

 

I think you'd be allright. How deep, do you have to get below a frost line down there? Your putting a slab down, right? Stone before the slab? The line from the house to your tank should be sch 40. Sch 80 (lightweight) after the tank.