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Concrete footings 101
Bearing capacity of soil
Understanding soil type and bearing capacities
Footing size
How to determine the minimum size for soil conditions
Footing problems
Pouring in wet soil and more
Frost heave & foundation footings
Frost protected shallow footings
Related Information:
Concrete calculator for footing pours:
Figure out how many cubic yards you'll need
Foundation drains for concrete footings

In the United States, FPSF technology has been used in engineered structures and is common practice for residential construction on crawlspace foundations in areas of Alaska. 

However, the major model building codes do not specifically recognize the FPSFs equivalence to footings placed below a prescribed frost depth. Recent amendments to the CABO One- and Two-Family Dwelling Code and the BOCA National Building Code recognize performance-based criteria for frost protection but do not specifically mention FPSFs. Consequently, widespread use of the technology in residential buildings has not yet occurred. Efforts are underway to obtain U.S. building code approval.

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