Thanks for the reply;
I'm not so sure that it is a problem with rodents, I was looking at it more as a structural item.
While yes it is called a "Rat Wall" does it not add stability to the slab?
My father had a pad poured for a shop and they dug the "rat wall" and poured...
OK, I have read everything on thickness of a slab for a light load driveway/garage.
And I apologize for the terminology; my Midwestern family calls it a "Rat Wall". Or a spade depth "footer" dug around the perimeter of a slab.
What I would like to know is the effectiveness...
