What must be true about the maximum rated load of any rigging assembly?

• A. It must be estimated by the user
• B. It must be warranted by the manufacturer or an engineer
• C. It can be decided on-site by the riggers
• D. It must be marked on each piece of equipment

Answer: (B)

The maximum rated load of any rigging assembly must be warranted by the manufacturer or an engineer to ensure safety and compliance with industry standards. This requirement is crucial because it provides a reliable assessment of the rigging's capabilities based on its design, materials, and construction. Engineers and manufacturers conduct thorough testing and evaluations to determine the maximum load each equipment or rigging can safely handle, which is vital for preventing accidents and ensuring the safety of workers and equipment.

Relying on the manufacturer's or an engineer's warranty means that users can trust the information is accurate and based on scientific principles and testing, rather than guesswork or subjective estimates. It establishes accountability and provides a standardized measure that users can reference to make informed decisions about safe lifting and rigging practices.