What component of a crane consists of girders, trucks, and end ties?

The component of a crane that includes girders, trucks, and end ties is the bridge. In crane terminology, the bridge forms the main supporting structure that spans the area where the load is lifted and moved. The girders are the horizontal beams that bear the load and connect to the trucks, which allow movement along the length of the bridge. End ties add stability and ensure that the structure maintains its integrity while bearing loads.

Understanding this component is crucial because it plays a significant role in the crane's capacity to lift loads efficiently and safely. The bridge serves as a key element in the overall design of a crane, facilitating horizontal movement while supporting various attachments such as hoists or trolleys that perform the actual lifting tasks.