Why is load calculation important in rigging?

Load calculation is crucial in rigging primarily because it ensures that the rigging equipment can safely handle the weight being lifted. Each piece of rigging gear, such as slings, hooks, and lifting devices, has a specific weight capacity, known as the working load limit (WLL). Accurate load calculations help prevent overloading equipment, which can lead to catastrophic failures, accidents, and injuries.

Determining the type of load being lifted is also important for choosing appropriate rigging methods and equipment, but it does not directly address safety regarding load capacity. Assessing the skill level of the rigger and evaluating weather conditions are important factors for overall safety and operational efficacy, but they are not as directly related to the critical aspect of ensuring the rigging can handle the weight as the load calculation itself. Hence, while these factors contribute to rigging safety, the primary focus of load calculation is to safeguard against the risk of exceeding equipment limitations.