Frost line depth in Franklin County, TN

How deep the ground freezes in Franklin County, TN

12 in. Dig to 13 in, just below the frost. Nearest NOAA station: Winchester 5se, 3.8 mi.

Your building department sets the legal frost line depth (IRC Table R301.2(1)); footings must go below it (R403.1.4.1). Call them before you dig.

Code depth · Snow