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Excavator Operator Certification Exam Prep · Question

An excavator's load chart specifies a maximum lifting capacity of 5,000 kg (11,000 lb) at a 4.0 m (13 ft) radius when equipped with a 0.8 cubic metre (1.0 yd³) bucket. For a lift of 4,800 kg (10,580 lb) at the same radius, what additional weight must the operator account for to ensure safe operation?

The stated lifting capacity on a load chart typically includes the weight of any attachments (like the bucket) and all rigging gear (slings, shackles) attached

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Question: An excavator's load chart specifies a maximum lifting capacity of 5,000 kg (11,000 lb) at a 4.0 m (13 ft) radius when equipped with a 0.8 cubic metre (1.0 yd³) bucket. For a lift of 4,800 kg (10,580 lb) at the same radius, what additional weight must the operator account for to ensure safe operation?

Answer options:

  • The weight of the excavator's counterweight.
  • The weight of the engine block. ✅ The weight of the bucket and all rigging components.
  • The weight of the operator.

Correct answer: The weight of the bucket and all rigging components.

Explanation: The stated lifting capacity on a load chart typically includes the weight of any attachments (like the bucket) and all rigging gear (slings, shackles) attached to the boom. These weights must be subtracted from the gross capacity to determine the net capacity for the specific load being lifted.

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