Commercial Building Inspector B2Wall Construction and Wall CoveringsHard
A commercial building inspector is reviewing the plans for an exterior wall constructed with wood-based structural sheathing. The sheathing is being used as a part of a shear wall. What is the minimum required penetration of fasteners into wood framing members for wood structural panel sheathing, when a nail method is used?
- A1 inch
- B3/4 inch
- C1/2 inch
- D1 1/4 inch
Show answer & explanationAnswer & explanation
Correct answer: D. 1 1/4 inch
According to IBC Table 2304.6.1(1), footnote 'b' (or similar footnotes in shear wall tables like 2305.3(1)), the penetration of fasteners into wood framing shall not be less than 1 1/4 inches for wood structural panel sheathing.
Why the other options are wrong
- A. 1 inch is not the minimum required penetration for wood structural panels into framing.
- B. 3/4 inch is insufficient for the minimum required penetration in shear walls.
- C. 1/2 inch is far too shallow for adequate fastener penetration in shear walls.
Shear Wall Fastener Penetration
Proper fastener penetration into framing members is critical for the performance of wood structural panel shear walls, ensuring the sheathing is adequately connected to resist lateral forces.
- Ensures shear transfer between sheathing and framing.
- Minimum 1 1/4 inches for wood structural panels.
- Specified in footnotes of IBC tables for fastening schedules (e.g., Table 2304.6.1(1)).
Memory trick: Fastener's Firmness: Penetration Prevents Pullout.