The crane operating envelope includes which elements?

The crane operating envelope refers to the defined space and operational parameters within which a crane can safely operate. This includes various elements that interact during the lifting process.

The correct answer encompasses the crane itself, the operator, the riggers who assist in the lifting operations, the crane walkers who may ensure safety and communication around the crane, and the rigging gear connecting the crane’s hook to the load being lifted. All these components are critical in establishing the safety limits and operational boundaries of the crane when lifting.

Understanding this is vital because it ensures that all individuals involved are aware of their responsibilities and the physical limits of the crane's capabilities, reducing the risk of accidents. The other options focus on fewer elements, missing the comprehensive view necessary for safe crane operation.