lpofree.blogg.se - Crane boom length and radius

Tailing lifts, tandem (multiple cranes), or turning lifts:ĭe-rate all cranes involved in the lift by 25% of the load chart.

Special critical crane lifts, hazardous by their nature and requiring special training, rigging, and/or boom attachments, include, but are not limited to, the following examples and requirements:.

When working less than 1-1/2 fully extended boom lengths from energized power lines,a designated signalman shall ensure the minimum distances. Note: No lifts are permitted that exceed 95% of the load chart for any given configuration of the crane.Īny part of a crane whose boom or boom attachment is working within 6 meters (20 ft) of any energized power-lines. Any load that exceeds 75% of the crane’s rated load capacity or manufacturer’s specifications for a specific lift.Any crane lift that requires an attachment(s) to the main boom.