What should not be done within 2 inches of a notch in a floor joist or rafter?

Drilling holes within 2 inches of a notch in a floor joist or rafter is not advised because it can significantly compromise the structural integrity of the joist or rafter. Notching is already a weakening action that alters the load-bearing capabilities of the joist, and drilling additional holes too close can exacerbate this weakening. The proximity of both notching and drilling creates a concentrated stress area, making the wood more susceptible to cracking or failure under load.

Maintaining a minimum distance from notches allows the joist or rafter to retain its intended load-bearing characteristics, ensuring safety and stability in the structure. This principle is critical in construction and remodeling to prevent potential structural failures that could lead to costly repairs or safety hazards.