Posted: Jan 8, 2010 8:18 pm
never had this problem up in the Rust Belt and it was, obviously, much colder up there? what gives?
I looked up the frost line for "Michigan" not southern, not northern, but the state proscribed depth (which can be modified by city and county codes) is 42" as compared to Memphis' depth of 18".
We typically don't see these temperatures so they don't require us to bury our pipes that deep.
And once it's in the envelope of your footings, pipes and other footings can be higher/exposed.