The lifting capacities listed in the load chart are based on what assumption?

The lifting capacities listed in the load chart are based on the assumption of ideal conditions. This means that the weights and load placements are calculated without external influences such as wind, slope of the ground, or other factors that could affect the crane's performance. Ideal conditions assume a crane is operating on stable ground, with no additional forces acting on the load being lifted, and the crane is properly setup without any load moment indicators engaged. This provides a baseline for operators to understand the maximum capacities the crane can safely manage under perfect circumstances. It's essential for operators to assess real-time conditions and adjustments may be necessary when actual conditions deviate from these ideal assumptions in order to maintain safety and prevent accidents.