8.2 SCOPE
This section of the code refers to manually operated girder trolleys and no specific guidance is given in respect of electrical, pneumatic or hydraulic power operated trolleys as they are usually considered to be an integral part of the lifting appliance which they support, although they have many features in common with manually operated trolleys.
Trolleys with built in pattern chain hoists are referred to but no guidance is given for the chain hoist part. For further information on the safe use of hand operated chain hoists see x-svn:///svn/leea/dita/xml/topics/TOP_00000000/TOP_00000048.html of this code and for power operated hoists see x-svn:///svn/leea/dita/xml/topics/TOP_00000000/TOP_00000157.html.
Some types of trolley are designed to run on purpose manufactured track other than on the bottom flange of a standard structural steel section. This section of the code excludes specific guidance on these types since all competent manufacturers and suppliers will provide appropriate design, installation and safe use information.
Trolleys for people-carrying applications are also excluded. For such applications refer to the manufacturer for specific instructions.