What is the recommended depth for footing in Virginia?

The recommended depth for footings in Virginia is typically 18 inches, aligning with the general requirements for frost protection and stability of structures in the state. This depth is significant because it helps to prevent issues such as heaving due to freeze-thaw cycles common in many areas of Virginia.

When footings are placed at least 18 inches deep, they reach below the frost line, which minimizes movement caused by ground freezing. This ensures the structural integrity of the building over time, maintaining the alignment and support of walls and other structural elements. Moreover, this depth helps distribute the load from the structure evenly across a larger area of soil, providing additional stability.

While other depths might be specified for certain conditions or types of soil, 18 inches is generally the standard recommendation for footings throughout much of Virginia unless otherwise dictated by specific site conditions or engineering requirements.