What is the maximum diameter allowed for bored holes in double studs?

The maximum diameter allowed for bored holes in double studs is 60% of the stud depth. This guideline is established to ensure that the structural integrity of the studs is maintained while still allowing for the necessary routing of plumbing, electrical, or other services through the framing. By limiting the diameter of the bore to this percentage, it prevents excessive weakening of the stud, which could lead to compromised load-bearing capacity or potential failure under stress.

This standard is particularly important in maintaining the safety and stability of the overall structure, as overboring can significantly reduce the strength and rigidity that the framing provides. Understanding this guideline helps ensure compliance with building codes and best practices in construction.