Which statement correctly describes crane capacity determinants?

Which statement correctly describes crane capacity determinants?

• A. Strength of components, machine weight, and stability
• B. Operator experience alone
• C. Weather and temperature only
• D. Ground soil type only

Answer: (A)

Capacity is defined by the crane’s structural limits and how it sits in its chosen setup. The components that actually lift the load—boom, pins, cables, and other parts—have finite strength, so the load cannot exceed what those parts can safely carry without yielding or failure. At the same time, the crane’s own weight and the ballast or outriggers determine stability and tipping resistance; the combination of radius, height, and configuration sets the safe load moment the crane can handle. Weather or ground conditions can require derating for safety, but they don’t establish the inherent capacity the way the strength of parts and stability do. Operator experience alone or ground conditions by themselves don’t set the lifting capacity.

Capacity is defined by the crane’s structural limits and how it sits in its chosen setup. The components that actually lift the load—boom, pins, cables, and other parts—have finite strength, so the load cannot exceed what those parts can safely carry without yielding or failure. At the same time, the crane’s own weight and the ballast or outriggers determine stability and tipping resistance; the combination of radius, height, and configuration sets the safe load moment the crane can handle. Weather or ground conditions can require derating for safety, but they don’t establish the inherent capacity the way the strength of parts and stability do. Operator experience alone or ground conditions by themselves don’t set the lifting capacity.