How do linemen typically evaluate a pole for structural integrity?

Linemen evaluate a pole for structural integrity primarily by visually inspecting it for visible damage and degradation, combined with using specialized testing devices. This process is crucial as it helps identify any signs of wear, cracks, or other issues that could compromise the pole's strength and stability. The visual inspection allows linemen to assess the condition of the pole surface, while testing devices can offer quantifiable data regarding its strength and load-bearing capacity.

Other approaches, such as measuring power output or focusing on painting, do not directly relate to the physical condition of the pole; they serve different purposes in the utility infrastructure. Regularly replacing poles each year would be impractical and would not maximize the life span of the existing infrastructure, which is why the combination of visual assessments with appropriate testing methods is the most effective way to ensure safety and reliability.