Cranes and Slings
Crane Rated Capacity
One of the most serious hazards that cranes present is collapse of the equipment caused by exceeding the crane's rated capacity. The term "rated capacity" is defined as:
The combination of factors that determine rated capacity is set forth in a load chart that must be on the equipment. In general, the load chart states the weight of the load that the crane can lift at different boom radii. The longer the radius at which the lift occurs, the smaller amount of weight the crane can lift.
Employees must not operate a crane in excess of its rated capacity. Because variable worksite conditions on worksites, such as swinging of the load caused by wind or other factors, the capacity of the crane may be less than that which exists under ideal conditions.
To comply with the rated capacity, the weight of the load must be known. Before beginning a lift, the operator must determine the load weight by using a reliable means.
Knowledge Check Choose the best answer for the question.
3-1. To comply with a crane's rated capacity, _____ must be known.
You forgot to answer the question!