Physics · Construction Equipment
Consider the following statements regarding the factors governing crane load capacity: 1. The size of the crawlers is not a factor due to diminutive mounting which decreases the stability of any footing. 2. The strength of the boom is a major governing factor in establishing load ratings, and any extension of the boom reduces the rating. Lowering the boom increases the clearance radius and thus reduces the rated capacity. 3. Counterweight is added to the rear-end of the machine. Manufacturer's specifications provide standard and maximum counterweights. Operating radius must not exceed that specified for the added weight. Which of the above statements is/are correct?
- 12 and 3✓
- 21 only
- 31 and 3
- 41 and 2
Correct answer
2 and 3
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