Question 633Deck General70% to pass
The signal man assisting the crane operator has his forearm vertical, forefinger pointing up, and moves his hand in a small horizontal circle. This is the signal to
AI Explanation
The correct answer is C) hoist.
The hand signal described, with the forearm vertical, forefinger pointing up, and a small horizontal circular motion of the hand, is the standard signal used to indicate that the crane operator should hoist or raise the load. This signal is defined in the regulations and standards governing crane operations, such as those published by the Occupational Safety and Health Administration (OSHA).
The other answer choices are incorrect because they represent different crane operation signals - "extend" for extending the boom, "lower" for lowering the load, and "swing" for rotating the crane. The specific hand signal provided in the question clearly indicates the "hoist" or "raise" command to the crane operator.
Related Questions
#631 How should you signal the crane operator to raise the boom? #632 How should you signal the crane operator to lower the boom and raise the load? #634 How should you signal the crane operator to stop in an emergency? #635 The signal man assisting a crane operator has his arm extended with his fingers closed and thumb pointing upward. This is the signal to _______________.#636 The signal man has both arms extended out, palms down, and is moving his arms back and forth. This is the signal for _______________.