https://www.decks.com/how-to/264/deck-footing-frost-depth-map

When excavating your deck footings, you'll need to dig below the frost line. Find out how deep the frost line is in your area with our frost depth map at Decks.com.

https://www.familyhandyman.com/decks/building-a-deck/how-to-build-a-solid-frostproof-deck-footing/

Dig and pour your deck concrete footings so they extend below the frost line. That way, they won't move, or heave.

https://www.quikrete.com/athome/video-deck-footings.asp

Successfully construct a solid concrete footing for your deck or other permanent .... Footings typically must extend below the frost line to prevent shifting during ...

https://thehonestcarpenter.com/blog/qa-2-frost-line/

Mar 11, 2018 ... Therefore, it's necessary to set your footings below the frost line of your particular region–the depth at which frost can no longer penetrate.

http://answers.angieslist.com/What-frost-line-relevance-building-digging-q140614.aspx

That is why you go below frost depth (other than to prevent pipes freezing ... footings like piers for decks) can progressively "frost jack" out of the ...

https://www.engineeringexpress.com/wiki/frost-protection-concrete-footings-grade/

Jan 3, 2017 ... The first method of frost protection specified in the code is extending the footing below the frost line also known as the frost front or freezing ...

https://www.finehomebuilding.com/2013/05/16/deck-footings-done-right

May 16, 2013 ... TOO SHALLOW: Decks connected to a house must be supported by footings that reach the frost line, the point below which the ground won't ...

https://www.aconcordcarpenter.com/installing-deck-footings.html

For this reason is always important to install deck and porch footings below the frost line for your area as well as make sure that the installed footing is on soil ...

https://www.hammerpedia.com/frost-line-map/

This resulted frost heave can be detrimental to footings and foundations. That's why building codes specify structural footings be placed below the frost line.

https://www.thespruce.com/foundation-footings-code-basics-1822269

Apr 22, 2019 ... Basic code requirements for foundation footings include site grading; soil load- bearing values; and footing depth, width, and levelness.