Vehicle loading cranes are rated in metre tonnes. This tends to cause some confusion amongst users. It is particularly important to understand the size requirements of your crane, because licensing requirements in Australia for vehicle loading cranes is determined by the rated capacity of the vehicle loading crane.
Vehicle loading cranes rated at 10 metre tonnes or above require a CV license to operate them.
So how is this rating determined?
To calculate the metre tonne rating of your crane, you need to:
- Refer to your crane’s load chart (located on the boom of the crane).
- Determine from the load chart the MAXIMUM LOAD (in Tonnes) your crane can lift at each particular RADIUS (In Metres).
- Multiply these 2 numbers together (Metres X Tonnes)
- If the answer is equal to or greater than 10, then you require a CV license to operate your Vehicle Loading Crane.
Example: Look at the load chart below from a knuckle boom crane.
Therefore: 3.1 metres x 5.2 tonne = 16.12 metre tonnes
This crane requires a High Risk Work (CV) license to operate it.
Dogging is not a prerequisite for vehicle loading cranes under 10 metre tonnes however, a high risk work licence for dogging (class DG) is required by anyone who applies slinging techniques to a load, which includes:
- calculating safe angles for slings or chains
- selecting the type of sling or chain to be used
- selecting the correct method to secure the load
- selecting the safe method to lift or turn the load
- checking the conditions of lifting gear for wear and tear.
A DG licence is also required by anyone directing the operator of a crane or hoist in the movement of a load when the load is out of the view of the operator.