What is the minimum thickness of exterior walls in one-story buildings?

The minimum thickness of exterior walls in one-story buildings is determined by structural and building code requirements that ensure safety, durability, and adequacy in load-bearing capacity. A thickness of 10 inches is commonly specified as it allows for appropriate insulation, structural support, and resistance to environmental factors, particularly for managing wind loads and providing adequate thermal performance. This thickness supports the necessary framing and materials typically used in exterior wall construction, ensuring compliance with building regulations that aim to protect the integrity of the structure over time.

While thinner options like 2, 5, and 12 inches may be insufficient or excessive for the structural requirements of most one-story buildings, 10 inches strikes a balance that is both practical and effective in building design.