How should the operator verify the LMI's boom length or load radius readings?

Verifying the Load Moment Indicator (LMI) readings for boom length or load radius is critical to ensuring the safe operation of mobile cranes. The most reliable method involves using actual measurements. This approach provides concrete data regarding the boom's position and the load's radius, eliminating any guesswork. Accurate measurements are essential because they allow operators to confirm that the crane is functioning within its safe operating limits, preventing potential overload situations that could lead to accidents or equipment failure.

Using actual measurements is a best practice as it provides a baseline for comparison against the LMI's displayed values. This ensures that the operator is fully informed and can act safely and effectively, particularly in dynamic work environments where loads and positions change frequently. In contrast, relying on estimates from visual cues, previous readings, or supervisory directions may introduce inaccuracies that could compromise safety and operational efficiency.