A deduction should be made for an extension even when lifting from it?

A deduction should be made for an extension even when lifting from it?

• A. True
• B. False
• C. Sometimes
• D. Not specified

Answer: (B)

When determining lifting capacity, the chart you use is for the exact configuration of the machine, including any extension. The extension’s presence changes the lever arm and stability, and that impact is already reflected in the rated capacity for that setup. Therefore there’s no separate deduction to apply for the extension itself when you’re lifting from it. If you were to deduct the extension’s weight, you’d unnecessarily underload the crane and reduce efficiency, while the chart’s values are the values you should use for safe operation. Always select the capacity corresponding to the exact boom length, extension length, and radius, and then ensure the actual load plus all dynamic and setup factors stay within that rating.

When determining lifting capacity, the chart you use is for the exact configuration of the machine, including any extension. The extension’s presence changes the lever arm and stability, and that impact is already reflected in the rated capacity for that setup. Therefore there’s no separate deduction to apply for the extension itself when you’re lifting from it. If you were to deduct the extension’s weight, you’d unnecessarily underload the crane and reduce efficiency, while the chart’s values are the values you should use for safe operation. Always select the capacity corresponding to the exact boom length, extension length, and radius, and then ensure the actual load plus all dynamic and setup factors stay within that rating.