The signal man assisting the crane operator...

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Question 1 of 2066636ee728f7522a1c518935

The signal man assisting the crane operator has his arm extended, with the thumb pointing up, and is flexing his fingers in and out for as long as the load movement is desired. This is the signal to __________.

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Question 1 of 20

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🔍 Key Concepts

• Standard hand signals for crane operations used by signal persons • Difference between commands affecting the boom (angle/length) and commands affecting the load (hoisting or lowering) • How the direction of the thumb usually relates to the direction of movement (up vs. down)

💭 Think About

• Focus on what an extended arm with thumb pointing up typically means in lifting/rigging operations. Is that telling the operator to move the load up, the boom up, or both? • Think about why the fingers are flexing in and out "for as long as the load movement is desired." Does that describe a continuous hoisting motion, boom motion, or some combination? • Separate in your mind: one part of the signal is the thumb direction, and the other part is the hand/finger motion. What does each part usually control?

✅ Before You Answer

• Verify how standard crane hand signals differentiate between hoist (raise load) and boom up/boom down commands • Check whether the signal for boom up uses a different arm position than the signal for hoisting the load • Confirm that choices involving both boom and load motion match (or don’t match) the described signal details: arm position, thumb direction, and finger motion

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