Frost line depth in Aleutians West Census Area, AK

How deep the ground freezes in Aleutians West Census Area, AK

39 in. Dig to 39 in, just below the frost. Nearest NOAA station: St George Island Ap, 540.9 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 · Method