Frost line depth in Aleutians East Borough, AK

How deep the ground freezes in Aleutians East Borough, AK

31 in. Dig to 31 in, just below the frost. Nearest NOAA station: Cold Bay Ap, 29 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