9 July, 2024
Do’s and don’ts in platform loading
Instability and overturning
All AWPs are designed and tested to take the specified capacity limits while maintaining appropriate safety factors. If an occupant places more load onto the platform and tries to raise it or puts more than the rated load on the platform while at height, there is a risk that the structure will be put under forces it was not designed or tested for.
Structural failure in this condition could be sudden and unpredictable and could result in collapse or overturn. If an operator allows more people onto the platform than the specified limit recommended by the manufacturer, the dynamic loads exceed those designed and tested for.
Safety systems
Most aerial work platforms in the marketplace today have a safety system that monitors overload status and protects the operator from exceeding specified capacity limits. Machines built to previous standards may not have this system installed. If a machine fitted with a load-sensing system is in an overloaded state, platform functions can sometimes be limited or prevented from operating. This can potentially leave platform occupants stranded at height until the material is removed.
Risks of overloading
Factors that contribute to the risk of overloading a platform are:
- Not planning the job effectively.
- Not knowing the safe working load for the machine in use
- Not understanding or underestimating the weight of materials and people that may be loaded onto the platform
- Not paying attention to or effectively monitoring the loads being placed onto the platform.
Eliminating risks
As an operator, you can eliminate safety risks. Always:
- Ensure the correct machine has been selected for the task to be carried out and that it can safely lift the intended loads
- Pay attention to the load being placed on the platform and make sure it is evenly distributed. If you are unsure of the weight of the load or suspect that the platform is overloaded, you must cease work until it has been verified that the total platform load is within the safe working load.
- Identify the safe working load before using the machine (check the manufacturers data plate, operator’s manual and provided decals provided)
- Understand the task and know the weight of the loads that are to be placed on the platform
- Ensure the site has an effective rescue plan in place, and that it is practiced, rehearsed, and understood.
