What is the angle used when drilling a hole into a pole for decay inspection?

The angle used when drilling a hole into a pole for decay inspection is typically between 30 to 45 degrees. This range is effective because it allows for a good balance between penetrating deep enough to assess the condition of the pole while also minimizing the risk of damaging the pole itself during the inspection process.

Drilling at this angle avoids issues with potential water drainage that can arise when the angle is too shallow or too steep. The 30 to 45 degrees angle ensures that the hole is sufficiently positioned to detect internal decay without compromising the structural integrity of the pole. Additionally, this angle helps inspectors visually assess any potential rot or moisture retention within the wood, aiding in effective maintenance and safety assessments.

The ranges outside of this option either do not optimize the balance needed for inspection or put the pole at a higher risk of further decay or damage.