🔍 Key Concepts

• Crane block terminology for pedestal cranes (hook block, rider block, heel block, gin block) • How the load line is reeved through the lower block that carries the cargo hook • The difference between a block that actually lifts the load vs. blocks that only change the direction of the wire

💭 Think About

• Look closely at item "D" in the illustration: is it the block that has the cargo hook attached, or is it mounted somewhere else on the boom or mast? • Ask yourself which of the named blocks normally travels up and down with the load, and which ones are fixed to the structure of the crane. • For each term in the choices, picture where it is usually located on a pedestal crane (tip of boom, heel of boom, topping arrangement, or running with the hook).

✅ Before You Answer

• Verify which component in the picture actually has the hook on it and moves with the lifted load. • Confirm which blocks (by location) are used only to lead or fairlead the wire at the heel or head of the boom, not to carry the load directly. • Match the standard definition of each option (hook block, rider block, heel block, gin block) with the physical position and function of item "D" in the diagram.