Residential Building Inspector B1Wall Construction and Wall CoveringsEasy
A residential building inspector is examining the installation of wood structural panel wall sheathing. The panels are 3/8-inch thick and being applied directly to studs. What is the maximum allowable stud spacing for this application?
- A48 inches on center
- B32 inches on center
- C16 inches on center
- D24 inches on center
Show answer & explanationAnswer & explanation
Correct answer: D. 24 inches on center
For 3/8-inch wood structural panel wall sheathing, the maximum stud spacing permitted by the IRC is 24 inches on center. This ensures adequate support and prevents excessive deflection of the sheathing.
Why the other options are wrong
- A. This spacing is excessive for wall sheathing and would lead to instability and failure to meet code.
- B. This spacing is generally too wide for 3/8-inch wall sheathing and would not meet code requirements.
- C. This spacing is typical for thicker sheathing or certain floor/roof applications, but not the maximum for 3/8-inch wall sheathing.
Wood Structural Panel Wall Sheathing Spacing
The maximum distance between studs when installing wood structural panel wall sheathing is determined by the panel thickness and its structural properties.
- Ensures adequate support for sheathing.
- Prevents excessive deflection.
- Varies with panel thickness and type.
Memory trick: Sheathing's strength dictates stud's spread.