12.2 SCOPE

This section of the code covers manually re-locatable mobile supporting structures for static use only. They may be manufactured from standard constructional sections or proprietary track sections and will usually be

mounted on wheels or castors but may have free standing feet. The range of designs and intended use covers all common types including demountable, fold away and self-erecting mobile supporting structures.

The use of mobile supporting structures is always associated with a lifting appliance, usually a hand chain hoist or power operated hoist and normally includes a trolley. In certain circumstances, winch and pulley block arrangements are used and fixed lifting points achieved by the use of beam clamps. Whilst mentioned in this section, specific guidance on the safe use of these items will be found in the following sections of this code:

  1. Hand chain hoists - x-svn:///svn/leea/dita/xml/topics/TOP_00000000/TOP_00000048.html.

  2. Hand operated chain lever hoists -SECTION 4 - HAND OPERATED CHAIN LEVER HOISTS.

  3. Lifting and pulling machines using a gripping action on the wire rope -SECTION 5 - LIFTING AND PULLING MACHINES USING A GRIPPING ACTION ON THE WIRE ROPE .

  4. Power operated hoists - x-svn:///svn/leea/dita/xml/topics/TOP_00000000/TOP_00000157.html.

  5. Travelling girder trolleys - x-svn:///svn/leea/dita/xml/topics/TOP_00000000/TOP_00000259.html.

  6. Beam clamps - SECTION 9 - BEAM CLAMPS.

This section of the code excludes mobile supporting structures with cantilever runways, tubular shear legs (tripods), mobile supporting structures designed for manual movement under load, power operated travelling portal cranes, straddle carriers and support structures on fixed foundations, although the latter may have features in common with the mobile type. Mobile supporting structures used for people carrying applications are also excluded.