Jib charts are used to show the capacities of the jib at what aspect?

Jib charts are specifically designed to illustrate the lifting capacities of a crane's jib based on various degrees of offset. The offset refers to the angle at which the jib extends from the crane. As a jib is offset to lift loads at different angles, its capacity to lift weight changes, making it crucial for operators to refer to the jib chart to determine the safe and effective lifting limits for each specific angle. Ensuring that the load being lifted falls within the capacity defined for the given offset is essential for safe operation.

While considerations like weight placements or boom lengths are important aspects of crane operation, jib charts specifically provide guidance on the relationship between the degree of offset and the lifting capacity, which is critical for maintaining safety and preventing accidents during lifting operations. This is why the correct focus is on different degrees of offset when using jib charts.