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Frost line - Wikipedia


The frost line—also known as frost depth or freezing depth—is most commonly the depth to which the groundwater in soil is expected to freeze. The frost depth ...

Decks.com. Deck Footing Frost Depth Map


When you excavate your footings you will need to dig below the frost line.This is the depth at which the moisture present in the soil is expected to freeze.



5" 10" 15" 20" 25"30" 35". 40". 45" 50". 55" 60". 60+". 0". 5". 10". 15". 20". 25". 30". 35". 40". 45". 50". 55". 60". AVERAGE FROST DEPTH. (Inches). 20"

NCRFC Soil Temperature Data - National Weather Service


Soil Temperature and Frost Depth Maps. Knowing the temperature of the soil is important for many activities including agriculture, horticulture, construction, and ...

CBD-26. Ground Freezing and Frost Heaving - NRC-IRC - MIT


At first, frost heaving of the soil was thought to result from the expansion of water ... The use of "degree-days of freezing" as a guide in calculating frost depth for a ...

How to Build a Solid, Frost-Proof Deck Footing | The Family Handyman


Dig and pour your deck footings so they extend below the frost line. That way, they won't move, or heave, as the ground freezes and thaws during seasonal ...

Check the Frost Line Before Digging Footings - Charles & Hudson


The bottom of your footings should sit 6 inches below the frost line so the posts won't shift as the ground freezes and thaws. You should also check your local ...

How Does Frozen Ground Form? | National Snow and Ice Data Center


For example, water turning to ice under roads sometime creates frost heave. ... But the depth of frozen ground is limited, because Earth is warm deep inside.

What is a frost line and what is its relevance when building/digging ...


That is why you go below frost depth (other than to prevent pipes freezing, too) - the ground "swells" with moisture freezing in it so can lift and ...

Frost line depth - Foundation engineering - Eng-Tips


Nov 14, 2013 ... How many of you take in account the frost line depth while defining the ... days, minimum foundation depth is 80cm below finished ground level.

More Info

What is the Frost Line? - innovateus.net


The depth to which water in soil will freeze in the winter is known as the Frost Line. The depth of the frost line is essential because it influences the construction  ...

exterior - How/where can I find out what the frost-line is for my area ...


Aug 4, 2013 ... How/where can I find out what the frost-line is for my area? ... Municipal Code states "Frost line depth = 12 inches below undisturbed soil".

How deep is the frost line in Maryland? | Reference.com


The frost line in Maryland is 30 inches deep. The frost line is the depth in the ground that ground water will freeze. It is also referred to as the freezing depth or  ...