42 inches minimum.
no Frost
In western Pennsylvania the frost line falls at 36", when installing underground waterlines 42" is perfered.
no Frost
Well, there more then one frost line in Illinois: 1) 10" to 20" for Southern Illinois 2) 15" to 30" for Central Illinois (frost line for Peoria) 3) 20" to 35" for Northern Illinois
frost line in pa is 42 inches
42 inches
one metre
42"
3ft
What is the frost line depth in louisville Kentucky
The frost line in Ohio is 3ft
They are located below the frost line