Doka Ringlock - 4-Leg Aluminium Stair Tower General Arrangement

Aluminium Stair Tower Erection Guidelines (4-Leg) User Information Ringlock
999817902 - 11/2020
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4-Leg Aluminium Stair Tower
General Arrangement
The Ringlock Platform Stair Tower makes access to
your site safer and more convenient. The Stair Tower
canbeeasilyintegratedwithinanexistingsca󰀨old,
orusedindependently.Thestairstinto2.0mlifts
andifrequired,anentrance/exitcanbemadeat
each platform level.
The Ringlock Platform Stair Tower is built from stand-
ard Ringlock system components with only three
additional components. These are the Aluminium
PlatformStair,theGuardrailsandaccessbarrier,
outer guardrail adapter (if required). It is not normally
necessary to erect the tower with a crane.
Afterthe1.4mx2.57m(3.07malsoavailable)bay
hasbeenassembled,theAluminiumPlatformStairs
should be installed from bottom to top. Double
Guardrails around the landings guarantee stability
andsafety.TheGuardrailsfortheStairstontothe
Ledgers.
EveryRinglockSca󰀨oldandStairTowerneedstobe
tied to a rigid construction for stability depending on
its height and least base dimension. At heights above
4.0m the Stair Tower needs to be fastened to the
accesssca󰀨oldorthepermanentbuilding/structure
every 4m vertically at the positions shown in red on
the diagram opposite.
AlsorefertoTG20(latestedition)concerningmaxi-
mum allowable height to base ratios for independent
sca󰀨olds.
1.40m
Plan
Elevation
2.0m2.0m2.0m
2.57m