Foundation wall footings for structures that are less than 3 stories tall in high wind zones should measure what?

The correct answer is based on the requirements outlined in the North Carolina Residential Code, which details specific dimensions for foundation wall footings depending on various factors, including building height and wind exposure. For structures that are less than 3 stories tall located in high wind zones, the code specifies that the foundation wall footings should measure 8 inches wide and 24 inches deep.

This dimension is designed to provide adequate support and stability for buildings subject to the increased lateral pressures created by high winds. The 8x24 size helps ensure that the footings can effectively distribute the load of the structure while also resisting the forces exerted by wind on the building. The deeper footing increases the resistance against uplift and lateral movement, which is critical in areas subject to severe weather conditions.

Understanding the rationale behind these requirements is essential for ensuring structural integrity and safety in residential construction, particularly in regions susceptible to high winds.