🔍 Key Concepts

• Function and location of boom stops on a pedestal crane • Crane boom movement limits: what happens at the upper vs. lower extremes • Relationship between boom angle and risk of structural damage or instability

💭 Think About

• Think about which direction of boom movement could create dangerously high stresses in the crane’s structure or hoist system. • Which choice describes a motion that is normally controlled by limit stops rather than by the operator’s judgment alone? • If the boom moved without these stops, which specific motion could cause the boom to contact the mast or exceed its safe working geometry?

✅ Before You Answer

• Identify whether boom stops are positioned to limit upward or downward travel of the boom. • Consider how increasing the boom angle affects load radius and potential backward tipping or structural strain. • Eliminate any options that describe conditions not directly related to a mechanical travel limit on boom angle.