What limitation applies to notches and bored holes in non-load-bearing walls?

In the context of non-load-bearing walls, the limitation on notches and bored holes primarily concerns the structural integrity and stability of the wall assembly. Allowing too large of notches or holes can compromise the strength of the studs and the wall as a whole.

The correct answer specifies that notches and bored holes in non-load-bearing walls cannot exceed 60% of the stud depth. This guideline is crucial because it ensures enough material remains to support the wall’s function without risking failure due to excessive modification. By maintaining a limit of 60%, the design acknowledges the need for a balance between utility (for running plumbing, electrical, and HVAC systems) and the inherent strength of the wall structure.

This regulation is informed by guidelines in building codes, which prioritize safety and performance in building design. It reflects a common understanding of construction practices that allow for functional alterations while still adhering to safety standards, ensuring the walls can still perform their intended role effectively.