Note: This information was updated in the 2015 Crane Safety Manual. Refer to Complex Lift which replaced the terminology referred to here as a critical lift. The Crane Association has left this information here for historical record. See the latest Crane Safety Manual for the latest information and advice on Multiple Crane Lifts.
1. A relatively simple basic lift requiring one or more cranes.
2. A relatively routine, simple basic lifts not involving significant height or reach using two or more cranes. A relatively routine, simple basic lift is normally one which because of weight, length or physical size requires two cranes e.g. lifting a 40ft container from each end off a truck and placing it on the ground.
1. A complex or critical lift requiring two or more cranes where engineering planning and procedures are essential.
2. A none-routine crane lift requiring detailed planning and additional or unusual safety precautions.
Category Two lifts or Critical lifts include:
- lifts made when the load weight is 75% or more of the rated capacity of the crane;
- lifts that require the load to be lifted, swung or placed out of the operators view;
- lifts using more than one hoist or crane that are not category one lifts;
- lifts involving none-routine or technically difficult rigging arrangements: hoisting personnel with a crane or derrick;
- lifts involving hazardous materials (e.g., explosives, highly volatile substances);
- lifts involving submerged loads;
- lifts without the use of outriggers or on-rubber load charts;
- lifts where the centre of gravity could change;
- Lifts where the crane is required to setup on a man made suspended platform or structure;
- or any lift that the crane operator believes should be critical.
For further information see the Code of Practice for Cranes.