Types of Cranes

There are many types of crane and a detailed classification is given in ISO 4306. However, the vast majority of cranes used in industry can be classed as:

• Lorry Loaders, (HIABs), which are suitable for delivery purposes and routine lifting operations associated uniquely with the vehicle on which they are fitted; 

• Truck Mounted Cranes, which are suitable for short duration operations where mobility around site is important;

• Crawler Cranes, which are suitable for longer duration operations and 'pick and carry duties' and for use on some types of terrain where a wheel mounted crane would not be appropriate; 

• Tower Cranes are suitable for semi-permanent installation for covering large areas whilst taking up relatively little room at ground level.

Selection of Cranes

While economic factors may influence the choice of a crane, it is essential that the crane selected is capable of lifting ALL loads that it would be expected to handle, within its capacity and stability limits. Manufacturers supply duty charts, which show the SWLs for specific duties. 

These are a good guide but are often compromised by many factors such as the design of the structure to be constructed, the characteristics of the individual loads to be lifted and site and environmental constraints.

Ideally a procedure for the procurement of lifting appliances and equipment should be outlined detailing how it is to be done and who is authorised to do it. The Lifting Equipment Engineers Association or most lifting equipment hire centres can provide advice on the selection, suitability, inspection and testing of lifting equipment and gear.

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