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It is a requirement of the Work at Height Regulations 2005 that unless a scaffold is assembled to a generally recognised standard configuration, eg NASC Technical Guidance TG20 for tube and fitting scaffolds or similar guidance from manufacturers of system scaffolds, the scaffold should be designed by bespoke calculation, by a competent person, to ensure it will have adequate strength, rigidity and stability while it is erected, used and dismantled.

Advanced scaffold structures that normally require bespoke design

Includes:

  • all shoring scaffolds (dead, raking, flying)
  • cantilevered scaffolds 1
  • truss-out Scaffolds
  • façade retention
  • access scaffolds with more than the 2 working lifts2
  • buttressed free-standing scaffolds
  • temporary roofs and temporary buildings
  • support scaffolds
  • complex loading bays 1
  • mobile and static towers 1
  • free standing scaffolds 1
  • temporary ramps and elevated roadways
  • staircases and fire escapes (unless covered by manufacturer’s instructions)
  • spectator terraces and seating stands
  • bridge scaffolds 1
  • towers requiring guys or ground anchors
  • offshore scaffolds
  • pedestrian footbridges or walkways
  • slung and suspended scaffolds
  • protection fans 1
  • pavement gantries
  • marine scaffolds
  • boiler scaffolds
  • power line crossings
  • lifting gantries and towers
  • steeple scaffolds
  • radial / splayed scaffolds on contoured facades
  • system scaffolds outside manufacturers guidance
  • sign board supports
  • sealing end structures (such as temporary screens)
  • temporary storage on site
  • masts, lighting towers and transmission towers
  • advertising hoardings/banners
  • rubbish chute

Any scaffold structure not mentioned above that falls outside the ‘compliant scaffold’ criteria in TG20 or similar guidance from manufacturers of system scaffolds.

The above list is not exhaustive and any scaffold that is not a standard configuration or does not comply with published manufacturers’ guidelines will require a specific design produced by a competent person.