Residential Building Inspector Practice Exam

What is the minimum thickness required for gypsum board support in wood framing?

1. 1 inch

2. 2 inches

3. 3 inches

4. 4 inches

The correct answer is: 2 inches

For gypsum board support in wood framing, the minimum thickness specified is 2 inches. This requirement ensures that the framing can adequately support the weight of the gypsum board and provide proper structural integrity. A thickness of 2 inches allows for sufficient nailing or screwing to secure the gypsum board, thereby minimizing the risk of sagging or detachment over time. Using this thickness also aligns with standard building practices that promote safety and durability in construction. Thicker framing members help better resist the forces that can act on the wall systems, especially in high moisture areas where weight from accumulated moisture could potentially become an issue. Understanding the appropriate thickness for framing is crucial for inspectors, as it directly relates to the performance and safety of the building envelope.