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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 northern U.S. climates, builders mitigate the effects of frost heave by constructing homes with basements, slabs, or crawlspaces with perimeter footings below the frost line. Other construction methods include:

  • Piles or caissons extending below the frost-line
  • Mat or reinforced structural slab foundations to resist heave
  • Non-frost susceptible fills and drainage
  • Adjustable foundation supports

The FPSF allows builders to construct a structurally sound foundation at a lower cost than associated with these practices. Although this discussion is limited to slab foundations, the technology may also be used with crawlspace construction when ventilation is properly controlled.

In addition to substantial initial cost savings, FPSFs provide an opportunity for increased energy savings because of their insulation requirements. These minimum insulation requirements for frost protection generally exceed existing energy code requirements (i.e., the CABO Model Energy Code) for foundation insulation.

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