Question

By raising the forearm in the air, index finger pointing upward and holding the hands straight, what does the operator know to do?

1) Lower the cable on the crane
2) Raise the cable on the crane
3) Move the crane to the left
4) Move the crane to the right

Answer 1

The gesture of raising the forearm with the index finger pointing upward signals the crane operator to raise the cable on the crane. This is a standard hand signal in crane operations that helps maintain safety and clear communication on construction sites.

Step-by-step explanation:

By raising the forearm in the air with the index finger pointing upward and holding the hands straight, the operator is typically giving a signal to raise the cable on the crane. This is a standard hand signal used in crane operations to communicate effectively and ensure safety on construction sites. The key is clear and unambiguous communication where each gesture corresponds to a specific action that the crane operator must follow.

It is crucial that all workers on a site understand these signals to maintain a safe working environment. These signals are often standardized, but specific sites may have variations, so it's important for workers to be trained on the signals used at their specific site.