When using an equalizer beam, the load radius for each crane is measured to which point?

The measurement of the load radius for each crane when using an equalizer beam is determined from the pick-up point on the equalizer. This is crucial because the equalizer beam is designed to distribute the load evenly among multiple cranes, and therefore, the effective radius at which each crane operates can vary based on where the load is actually attached on the beam.

Measuring from the pick-up point ensures that any variations in the distribution of weight and load dynamics are accurately accounted for, leading to safer and more effective operation. Proper assessment of the radius helps avoid tipping or undue stress on the cranes, especially in critical lift operations where precision is paramount.

While the operator's position, load center of gravity, and the base of the crane might provide some context or relate to the overall lift setup, they do not provide the specific information needed to determine the load radius for each crane in relation to the equalizer beam. Thus, the correct emphasis is on the pick-up point on the equalizer itself.