The net capacity of a crane is dependent upon the nature of the lift and what capacity deductions need to be subtracted from the gross capacity. To determine the amount of weight a crane can lift, the weight of the crane and its accessories should be deducted from the total weight. If movement is not taken into account, the crane may lose balance and tip over. Some lifts necessitate a full 360-degree turn by the crane. When determining the feasibility of a lift, it is necessary to consider how far and how fast a crane should rotate. MovementĬranes must frequently move or rotate in order to complete a lift. The crane stability must be considered when determining the boom angle as it may lose balance when lifting a weight larger than the angle might support. The boom angle is placed between the longitudinal and centerline of the boom and the horizontal centerline.

The load chart diagram will illustrate the required boom length with the given lift distance and height. The average crane can lift between 10,000 and 60,000 tons. The lift capacity measurement of a crane tells us how much load a crane can lift naturally including the dimension of the load, lift height, and lift angle. Here are the major factors that are required to understand a crane load chart. Speak with Total Equipment Training about Crane Loan Charts How to Read a Crane Load ChartĬrane load charts have a number of variations depending on the several factors that are related to the information of the lift capacity of the crane, the lift range, boom angle, and more. Boom length, boom angle, and load radius are three critical load chart factors. The lift is dependent on the configuration of the crane base and the setup of the crane. Load charts take into consideration how the lift capacity varies when considering the distance and the angle of the lift. This chart ensures that the crane that is under operation does not exceed its lifting capacity. NCCCO Mobile Crane Operator Certification Practice TestĪ crane load chart helps the operator calculate a crane’s lifting capabilities.Aerial Work Platform (AWP) Practice Test.OSHA OVERHEAD CRANE INSPECTION SERVICES.

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Boom radius of crane