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24"
32"
how far off the property line do you have to be for a house addition in susex county delaware
12 inches
Wilmington, North Carolina, is located in New Hanover County. The frost line depth in New Hanover County is 2 inches.
36 inches
The frost line in Wilmington, North Carolina is 2 inches. This is the same for all of New Hanover county.
According to the building permit section of the Clermont County, Ohio web site "The frost line is 30 inches below grade." See attached link
no Frost
According to the Idaho Association of Building Officials, the frost line in Idaho ranges from as little as 12 inches in Orofino County to as much as 36 inches in several counties. Ada County, where Boise is located, has a frost depth of 24 inches. See the full list here: http://www.idabo.org/loads.htm
frost line in Gwinnett
Up to July 2008 it was 4' per the NYC Code. I haven't dealt enough with the newly adopted code. I imagine it hasn't changed.