On a 'Frost Line Map' it is 10".
To get a more accurate reading call your local building inspector office.
7 inches. http://www.cloudynights.com/ubbthreads/attachments/2387257-FROST%20LINE%20MAP.doc
no Frost
no Frost
frost line in pa is 42 inches
The frost line in Spokane, WA is typically around 24 inches deep. This is the depth at which soil is expected to freeze during the winter months. It is important to consider the frost line when planning construction projects to prevent damage from freezing and thawing.
42 inches
one metre
42"
3ft
What is the frost line depth in louisville Kentucky
They are located below the frost line
32"