How far must holes bored in solid wood joists be located from the top and bottom of the joist?

• A. 1 inch
• B. 2 inches
• C. 3 inches
• D. 4 inches

Answer: (B)

Holes bored in solid wood joists must be located at least 2 inches away from the top and bottom of the joist. This distance is crucial for maintaining the structural integrity of the joist, as drilling too close to the edges can weaken the material and potentially lead to failure under load. By adhering to the 2-inch rule, the likelihood of compromising the strength of the joist is minimized, ensuring that the joists can adequately support the loads they are designed for.

Using this guideline helps prevent issues such as splitting or weakening that can occur when holes are placed too close to the edges. Moreover, local building codes often enforce such minimum distances to ensure safety and structural reliability in construction practices.