You're using a lorry-mounted crane to unload building materials. Which safety feature should you use?

You're using a lorry-mounted crane to unload building materials. Which safety feature should you use?

• A. Wheel clamps
• B. Vehicle stabilisers
• C. Jockey wheels
• D. Kingpin locks

Answer: (B)

Stability of the setup is what matters when a lorry-mounted crane is used. When the crane lifts, its forces push down and sideways on the vehicle, creating a tipping risk. Deploying the vehicle stabilisers (outriggers) gives a wide, solid base and transfers the load to the ground rather than through the truck frame, keeping both the crane and vehicle steady during unloading. They should be fully extended and supported on firm ground (use cribbing if the surface is soft) to prevent sinking or shifting. Wheel clamps, jockey wheels, and kingpin locks don’t provide the necessary stability for lifting operations, so they aren’t the right safety feature to use here.

Stability of the setup is what matters when a lorry-mounted crane is used. When the crane lifts, its forces push down and sideways on the vehicle, creating a tipping risk. Deploying the vehicle stabilisers (outriggers) gives a wide, solid base and transfers the load to the ground rather than through the truck frame, keeping both the crane and vehicle steady during unloading. They should be fully extended and supported on firm ground (use cribbing if the surface is soft) to prevent sinking or shifting. Wheel clamps, jockey wheels, and kingpin locks don’t provide the necessary stability for lifting operations, so they aren’t the right safety feature to use here.