Determine the weight and structure of the load you are lifting, then use this information to determine the required Grade 80 product specification and WLL
The WLL, full working load limit or sometimes safe working load, is the maximum weight the product should carry when in use. This figure is based on ideal conditions of use and may not be correct if you are using the equipment under abnormal conditions, such as extremely high temperatures, extremely low temperatures, exposure to chemical solutions, salt water, etc.
In addition to the working load limit, the angle of the actual load should also be considered, as the WLL will be affected by the angle of the load.