Doka Ringlock - Notes on Safe Use of Ringlock Stair Towers; 10-Leg Stair Tower Erection Steps

Stair Tower Erection Guidelines (10-Leg) User Information Ringlock
999817902 - 11/2020
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NotesonSafeUseofRinglockStair
Towers
The notes on this page refer to both the 10 leg and 4
Leg Stair Towers:
▪ Before operatives can be allowed to use a Stair
Tower,makesurethattheStairTowerhasbeen
erected properly in accordance with the following
guidelines and that it complies with the demands of
the user.
▪ Make sure that all people who are allowed access
to the Stair Tower are aware of its function and the
maximumallowableloads.
▪ The users of the stairs need to be aware that any
changestothesca󰀨oldmustbeproperlyengineered
and erected in accordance with Doka and the Build-
ing Regulations for landings and stair arrangements
etc.
▪ It is recommended that routine checks form part of
your everyday procedures to ensure that compo-
nents have not been removed or have been incor-
rectly assembled after they had been removed.
▪ Use adequate signs and barriers to prevent people
from entering incomplete Stair Towers.
▪ Makesurethateachsca󰀨oldplatformhassafe
entrancesandexits,andthattheseentrancesand
exitsarekeptclear.
▪ Please note that because of Building Regulations
requirements the Stair Tower is not suitable for Pub-
lic access.
Step 1
➤ Place the Base Collars over the Base Jacks.
Step 2
➤ Position the Base Jacks and assemble the Ledgers.
Make sure that this setup is level. The Base Jacks
can be used to level the components. Use wooden
sole plates boards as necessary depending on the
ground conditions. Where stairs are required to be
setoutonslopingground,refertosettingoutguid-
ance on page 14.
➤ Putinplaceonbothoutsidebays,three320mm
wide steel Planks 2.07m long.
Step 3
➤ Erect 3.0m Standards onto each base Collar and
Jack and assemble the Ledgers and Transoms for
therstlift.AlsoassembletheBracesonthetwo
outer sides.
➤ Next,assembletheStairStringers.Theselockinto
the rosettes at the top and the bottom of the plat-
forms and will also act as braces to each side of the
sca󰀨oldtowerasitiserected.
➤ WhenthetwoStringersareinplace,thecentral
coreoftheTowerwillbecomesignicantlymorerig-
id and ready to take all other components required
to complete the Tower.