Final answer:
Before using a cable rigging chart, one needs to know the load weight, lift type, rigging angle, environmental conditions, cable properties, and configuration. This information ensures correct and safe rigging equipment selection, crucial for the safety of the operation.
Step-by-step explanation:
Before using a cable rigging chart, certain information must be gathered to ensure the correct and safe selection of rigging components. This includes understanding the weight of the load, the type of lift (single hook, double hook, basket, choker, etc.), the angle of the rigging, and the environmental conditions which could affect the operation (such as wind, temperature, or corrosive atmosphere). These factors are crucial as they directly influence the rigging's capacity and safety.
To use a cable rigging chart effectively, one should also know the properties of the cable being used, such as its diameter, material composition, and whether it is braided or wire rope. The configuration of the rigging and the number of legs in the sling must be considered as well, since they also affect the load capacity.
Overall, the key to safe and efficient use of a cable rigging chart lies in meticulously gathering all necessary information before selection and application of the rigging equipment. Skipping any of these steps may result in the use of inadequate rigging, risking damage to the load, rigging gear, or even worse, personnel injury.