ICC Commercial Mechanical Practice Exam

How much of a wood stud's depth can be cut or notched in bearing partitions?

1. 15 percent

2. 55 percent

3. 6 percent

4. 25 percent

The correct answer is: 25 percent

In bearing partitions, the allowable cut or notch for wood studs is generally limited to 25 percent of the stud's depth. This restriction is important because cutting or notching beyond this limit can compromise the stud's structural integrity, reducing its capacity to bear loads effectively. Wood studs are typically used in the framing of walls and are critical to the overall stability and strength of the structure. Adhering to the guideline of 25 percent helps ensure that any modifications to the studs do not significantly weaken them, thus maintaining the safety and performance of the building. When modifications such as wiring or plumbing are needed, this guideline helps builders make adjustments while still preserving the necessary strength required for load-bearing components. This standard is established in various building codes to promote safety in construction practices.