Steve wrote:


I once heard you can't drive over any part of the septic system. What
he plans to do it to use ground protection mats to create a path to
the tree. He says it is not good to drive directly over the tanks,
but it would be fine to go over the pipes using these mats. In
particular this would be the pipe between the house and the tank (not
the leach fields). I estimate the pipe is buried only about a foot
and a half. He says that because of the round shape it can take a
great deal of pressure without breaking.

I used the 10" round black plastic pipe (very similar to septic pipe)
as drain pipe under my drive. It's buried about 16" deep. Then I had
loggers cut 20 acres of pine on the back of my property. They drove 18
wheelers loaded with logs across the drain pipe in the drive and never
damaged it. So yea, that round pipe can take a lot of pressure.

Bob