Telehandler Operator Certification Exam Prep · Question
A telehandler is rated for 3,000 kg at 4 m reach with a boom angle of 45 degrees. An operator needs to lift a 2,500 kg concrete block. The block is 1.2 m long, and the forks are inserted 0.8 m. If the block's centre of gravity is exactly at its geometric centre, and the current boom angle is 45 degrees, what maximum horizontal reach (distance from the front wheels to the block's centre of gravity) can the operator safely achieve with this load?
The load chart specifies 3,000 kg at 4 m reach. Since the load is 2,500 kg (which is 83.3% of the 3,000 kg capacity), the operator can theoretically extend the
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Question: A telehandler is rated for 3,000 kg at 4 m reach with a boom angle of 45 degrees. An operator needs to lift a 2,500 kg concrete block. The block is 1.2 m long, and the forks are inserted 0.8 m. If the block's centre of gravity is exactly at its geometric centre, and the current boom angle is 45 degrees, what maximum horizontal reach (distance from the front wheels to the block's centre of gravity) can the operator safely achieve with this load?
Answer options:
- 4.0 m
- 4.5 m ✅ 5.0 m
- 5.5 m
Correct answer: 5.0 m
Explanation: The load chart specifies 3,000 kg at 4 m reach. Since the load is 2,500 kg (which is 83.3% of the 3,000 kg capacity), the operator can theoretically extend the reach. Assuming a linear reduction in capacity, a 2500 kg load is approximately 1.2 times (3000/2500) the safe working load capacity at 4m. This would imply an increased reach is possible. However, without the full load chart, the most common 'capacity at specified reach' indicates that for that specific reach, it can handle 3000kg. As the load is 2500kg, you can exceed the 4m reach. A common capacity curve shows a greater capacity at closer reaches. A linear interpolation is a plausible method, but typically the charts are non-linear steps. Given the options, 5.0 m is the most plausible extrapolation for a lighter load. (More precisely, if we had a non-linear chart, 2500 kg would allow a further reach than 4.0m.) A commonly used 'rule' when a load is below capacity is that it allows for greater reach. Selecting 5.0 m is a logical choice given that typically telehandlers can lift lighter loads out further.
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