Outriggers are used to stabilize the crane by distributing weight and preventing tipping. How must they be used?

• A. Outriggers are purely cosmetic and have no impact on stability.
• B. Outriggers stabilize the crane, distribute weight, and prevent tipping; they must be fully extended, positioned on solid ground, and used with mats or cribbing if needed.
• C. Outriggers should be used only on paved surfaces.
• D. Outriggers are optional for all lifts.

Answer: (B)

Outriggers expand the crane’s footprint and transfer the load to the ground, creating a wider, more stable base that helps prevent tipping during lifts. For them to work properly, they must be fully extended to the specified reach, placed on solid, level ground, and equipped with mats or cribbing if the surface is soft, uneven, or unable to support the load. This ensures the weight is distributed across a stable bearing surface rather than concentrating it on a weak spot. Outriggers are a vital part of crane stability, not optional or cosmetic, and they should be used whenever the lift conditions require them according to the manufacturer’s guidance.