A construction site is located in a high-wind area. The crane manufacturer's wind speed limit is 50 km/h for this specific crane model, but the project's site-specific wind management plan mandates a maximum of 40 km/h for lifts involving personnel or large sails. At what wind speed should the operator definitely stop operations when lifting a large scaffolding section?

Question: A construction site is located in a high-wind area. The crane manufacturer's wind speed limit is 50 km/h for this specific crane model, but the project's site-specific wind management plan mandates a maximum of 40 km/h for lifts involving personnel or large sails. At what wind speed should the operator definitely stop operations when lifting a large scaffolding section?

Answer options: ✅ 40 km/h, as it is the project-specific limit for susceptible loads.

• 50 km/h, as it is the manufacturer's absolute limit.
• Technically 45 km/h, as it's halfway between the limits.
• It depends on the operator's judgment at the time.

Correct answer: 40 km/h, as it is the project-specific limit for susceptible loads.

Explanation: When there are conflicting wind speed limits, the most restrictive (lowest) limit always takes precedence, especially for critical lifts or loads susceptible to wind. The site plan's 40 km/h limit applies here.