What percentage of a wall stud can be notched in a wood framed bearing wall in light construction?

What percentage of a wall stud can be notched in a wood framed bearing wall in light construction?

• A. 25%
• B. 40%
• C. 33.3333%
• D. 16.67%

Answer: (A)

Notching a load-bearing wall stud is limited to keep enough wood to carry the loads. In light wood-framed bearing walls, you may notch no more than 25% of the stud’s depth. That preserves the stud’s strength to transfer loads from the top plate to the bottom and resist bending and shear. For a typical 2x4, this means a notch of about seven-eighths of an inch. If you need more space, you’d have to explore other methods (drilled holes within allowed sizes, plates for protection, or structural changes) rather than making a deeper notch. The other percentages aren’t the standard limit for bearing walls.

Notching a load-bearing wall stud is limited to keep enough wood to carry the loads. In light wood-framed bearing walls, you may notch no more than 25% of the stud’s depth. That preserves the stud’s strength to transfer loads from the top plate to the bottom and resist bending and shear. For a typical 2x4, this means a notch of about seven-eighths of an inch. If you need more space, you’d have to explore other methods (drilled holes within allowed sizes, plates for protection, or structural changes) rather than making a deeper notch. The other percentages aren’t the standard limit for bearing walls.