8.1 FOREWORD

Girder trolleys are generally used to move a load suspended on a structural section in conjunction with a hand or power-operated lifting appliance. They are therefore commonly used on runways, jib cranes, mobile supporting structures and overhead travelling cranes.

No specific guidance is given in respect of power operated trolleys in this section of the code as it is more usual for them to be ‘combined’ with their associated hoist and treated as a part of that machine, refer to 1.A6 APPENDIX 6 - PRINCIPLES FOR THE SELECTION AND USE OF LIFTING APPLIANCES and section SECTION 6 - POWER OPERATED HOISTS. However, the general principles given here may also be relevant to their selection and use.

There are a small number of standards dealing specifically with girder trolleys, and as such many are produced to the various manufacturer’s own specifications. The user’s attention is also drawn to the various sections of this code detailing the structures on which trolleys may be found and with which they must be compatible.

Section SECTION 3 - HAND OPERATED CHAIN HOISTS of this code refers to the safe use of hand operated chain hoists and section SECTION 6 - POWER OPERATED HOISTS refers to the safe use of power operated hoists.