At what minimum depth should footings generally be placed?

Footings should generally be placed at a minimum depth of 12 inches to ensure proper support for the structure they are meant to bear. This depth helps in several key areas, including preventing frost heave in colder climates, providing sufficient stability to bear the load of the building, and reducing the risk of differential settlement. By placing footings at this depth, you create a solid foundation that evenly distributes the weight of the structure, minimizing the chances of damage in the long term.

Choosing a depth less than 12 inches could compromise the structural integrity of the building, potentially leading to problems such as shifting or cracking as the ground settles or as moisture levels fluctuate with the seasons. Thus, the 12-inch guideline serves as a minimum standard in construction practices to ensure stability and longevity of residential structures.