Where should you look to find the capacity reductions or shutdown point for crane operations in windy environments?

• A. The manufacturers recommendations found in the operator's manual.
• B. The crane owner's license.
• C. The weather service forecast.
• D. Company policy document.

Answer: (A)

Wind-related capacity reductions and shutdown thresholds are specified by the crane’s manufacturer in the operator’s manual. That manual contains the wind-speed derating charts and the exact criteria for stopping work that apply to that specific crane model, taking into account its boom length and angle, rigging, counterweights, and configuration. Using these charts ensures you’re operating within what the crane has been tested and certified to handle, not just what general guidance suggests.

Other sources can inform planning at a high level but don’t provide the model-specific limits. A weather forecast might tell you to expect strong winds, but it won’t give you the precise load limits or shutdown wind speed for your exact crane. A crane owner’s license or company policy may cover broader safety practices, but they don’t replace the manufacturer’s defined limits for capacity deration and when to halt lifting.