Doka Ringlock - Step 3

User Information Ringlock Sca󰀨oldingErectionGuidelines
999817902 - 11/2020
11
Step 3
➤ Whenthebaseliftiscompleted,therstRinglock
Standards can be positioned into the Base Collars.
ThebottomoftheStandardstintothesockettube
at the top of the Base Collar.
➤ The Spigot on the Standards always point upwards.
➤ It is recommended that the joints in inner and outer
Standardsofthesca󰀨oldbeatdi󰀨erentlevels.Start
with a longer vertical on the outside. This will stag-
ger the joints in the verticals which and will also aid
initsstabilityifthesca󰀨oldisaboveeightmetres
high. It will also provide the
connectionsfortherstlevel
of Guardrails on the outside
ofthesca󰀨old.
Sca󰀨oldingNote:
It is not imperative that the joints in Ringlock Stand-
ardsarestaggeredwhenthefullheightofthesca󰀨old
is less than eight metres high i.e. four lifts. In this case
the inner and outer Standard can be the same length
although this will not necessarily provide the appropri-
ate stagger in the Standards to provide the connec-
tionsfortheguardrailswhenthesca󰀨oldreachesfull
height.
Howevertoensurethatthesca󰀨oldattainsitsmaxi-
mum permissible height at all times it is recommended
that the Standard are staggered when at all possible.
Anysca󰀨oldabovefourliftsshouldhavethejointsin
alltheStandardsstaggeredsuchthatthesca󰀨oldis
morestableforittoachievethemaximumpermissible
height (refer to Technical Manual).
Step 4
➤ Ledgers and Transoms can now be placed at the
requiredlevelsfortherstlift.
➤ It is recommended to use Truss Ledgers (Tran-
soms) to support Planks.
Sca󰀨oldingNote:
There are several types of Ledger available to support
Planks:
A 0.73m Ledger is unreinforced and will support two
Planksandprovidetheminimumwidthofsca󰀨oldin
accordance with BS EN 12811-1: 2003 and will gener-
allysupportuptoLoadClass4,althoughLoadClass-
es 5 and 6
can also be supported.
Truss Ledgers span from 1.4m up to 3.07m and carry
varying loads depending on use and width of platform.
ThemaximumcapabilityofeachtypeofLedgerisde-
tailed in the Technical Manual.