WELLTECH SW2000L Manuale di riferimento
Scaffold Introduction and Guideline
SW2000L
DW2000L
Mobile Aluminium Tower
750/1350 Ladderspan
3T - Through the Trapdoor Method
Scaffold Introduction
Welltech Modular Aluminum Scaffold is an all-rounded, versatile and user-friendly
aerial solution for all access needs. The system can be easily erected and with
highly customizable assembly it meets all site constraints and provides safe and
efficient working platform for all purposes.
The key to the system is that its quick assembly thanks to smart locking claws at
the ends of horizontal and diagonal bracing. It allows an instant lock-up possibly
performed by one single hand, however, with the reverse unlocking plug, two
hands are needed to unplug the bracing thus highly promoting the security of the
tower.
Welltech Modular Aluminum Scaffold boasts a comprehensive range of standard
frames, walk-through frames and Laddaspan, all of which fully comply with BS
1139. The manual combination of 3-rung, 4-rung and 5-rung frames ensures a
customizable platform height.
This guideline provides you instructions to use the 3T (Through the Trapdoor)
method. Ensure your system is assembled easily and safely.
Synopsis
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Scaffold Introduction and Guideline_TUV
“Please read this guide carefully.”
Instruction Manual EN 1298-IM-EN
Welltech Aluminum Scaffold has been tested and certificated to EN 1004
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Scaffold Introduction and Guideline_TUV
Stability of Scaffold
A scaffold should not be used unless it is properly constructed and is suitable for
the purpose for which it is required and has been inspected.
Where the scaffolding exceeds 2m in height, each contractor (including subcon-
tractors and the self-employed) should be satisfied that the scaffold has been
inspected by a competent person within the previous 7 days and should therefore
ask to see the report of the inspection.
Users (including contractors and workers) who discover a serious defect in a scaf-
fold, which may adversely affect their or another’s safety, should stop using that
scaffold and report the defect to the site management.
Scaffold Users
See whether the scaffold is vertical or needs readjustment
Check whether the structure assembly is still correct and completed
Check the wind condition is suitable for ectrction and use moving tower.
Confirm that no environmental changes influence safe use of the scaffold
Be provided with relevant information on the conditions of use of the scaffold,
including the loading capacity of the scaffold, in a comprehensible form
Not overload the scaffold either locally or in general
Not interfere with or misuse the scaffold
Users should
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Scaffold Introduction and Guideline_TUV
Promptly report defects in the scaffold to whoever is in control of the scaffold
Not leave a scaffold in a hazardous condition for current or subsequent users
Check all parts, auxiliary tools and safety equipment( helmet, ropes ...) are available
on site.
All casters should be locked when loading and unloading and using the mobile access
tower;
Check the ground on which the mobile access tower is to be assembled and moved in
level,even, no obstructions and capable for supporting the tower.
When moving the mobile access tower to another duty station, no one should stay on
the mobile workbench or place any items on the platform that may increase the risk of
falling over it or may move on the mobile access tower. Loose objects (such as hand
tools);
When using the mobile scaffold tower in through-buildings,on uncovered buildings or
on the corners of buildings,pay particular attention to the wind conditions to prevent
the mobile scaffold tower from tilting over.
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Scaffold Introduction and Guideline_TUV
Precautions For Moving
Wind speed and wind load
Effect of Wind Loads on the Tower
Wind Description Beaufort Scale Beaufort No Speed
(m.p.h.)
Speed
(m/sec.)
Medium Breeze
Strong Breeze
Gale Force
Raises dust and
loose paper,
Twigs snap off.
Large branches in
motion,
Telegraph wires
whistle.
Walking is difficult
4
6
8
8-12
25-31
39-46
4-16
11-14
17-21
The acceptable wind speed for the free standing tower is 17mph.
If the wind speed reaches 25mph the tower should be tied in to a rigid structure.
At 40mph, the tower should be dismantled.
“User should pause work on the tower when the wind speeds over
7.7metres per second (17m.p.h).”
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Scaffold Introduction and Guideline_TUV
How to move scaffolding Tower
Before moving the scaffolding tower, make sure everyone has left the rack and
clean up all the debris. No person or materials should be on the tower during
movement.
Tower should be reduced in height to 4m platform height before movement.
Release the support of the outriggers to a half height from the ground
(ie 12 mm)
Determining the safety of the tower route and having sufficient height to avoid
collisions with wires, ceiling devices, beams, etc.
The tower should only be moved by manual effort, and only from the base.
Must be pushed at the bottom of the frame
When stopping the move, all casters must be locked immediately
Check the tower is still correct and complete before use.
*Do not move the tower in wind speeds over 16 metres per second (12mph).
Step
Ensure castors are re-locked and all components touch ground once re-positioned
To realign the mobile access tower (see the 6.3c)
1.
2.
3.
4.
5.
6.
7.
8.
“Please pay attention when you moving the Scaffolding Tower, and watch
out with the ground and people. ”
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Scaffold Introduction and Guideline_TUV
Inspection Before and During Use
Scaffolds should be inspected before use and again at least every 7 days and after
any circumstance that might affect the stability or safety of the scaffold. Such circum-
stances include:
Modification
Period without use
Exposure to bad weather
Damage, including impact of traffic or site equipment with the scaffold
The scaffold inspection checklist can be follow:
1.
2.
3.
4.
1. Ensure all brace claws operate and lock correctly prior to erection
2. check components prior to erection
3. check tower prior to use
4. Tower upright and level
5. Castors locked and legs correctly adjusted
6. Diagonal braces fitted
7. Stabilisers/outriggers fitted as specified
8. Platforms located and wind locks on
9. Toeboards located Check
10. guardrails are fitted correctly
Checklist
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Scaffold Introduction and Guideline_TUV
A report of the inspection should be made on a suitable form and a copy of the report
should be retained on site.
It is not allowed to extend the height of the platform by the use of ladders, boxes or
other devices.
It is not allowed to extend the height of the platform by the use of ladders, boxes or
other devices.
Temporary structures such as scaffolds and working platforms should be designed
by a competent person or a professional engineer to ensure that they are securely
constructed with sufficient working load. They should also be erected, altered,
dismantled and used in accordance.
“Please check the marking with scaffolds when you using.
Keep the report on site and available for inspection.”
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Scaffold Introduction and Guideline_TUV
Maximum platform height for outdoor use is 8 meter.
Height to Basw Ratio = Maximum
3 : 1
3
1
Maximum platform height for indoor use is 12 meter.
Height to Basw Ratio = Maximum
3.5 : 1
3.5
1
The Basic Knowledge Required for scaffolds Operatiors
750 Ladderspan
1350 Ladderspan
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Scaffold Introduction and Guideline_TUV
Load Path:
To following the EN1004:2004, the gravity loads has designed to including dead
load, self-weight and uniform distribution load acting on the platform will be resist
by the bending stress of the platform and then the loading will transfer to the alu-
minium beams supporting the platform and then the loading will be transfer to the
vertical aluminium elements and the bracings are added as restrain to the vertical
members.
For the lateral load, the loading will be transfer to the structure and then resist by
the vertical elements and the stabilizers by push and pull effect. The bracing
members are used to stiffen the structure. And the stability of the structure is
resisted by the self-weight of the structure and the contribution of the stabilizer
which increases the effective base dimensions of the tower.
NUMBER OF WORKING PLATFORMS ALLOWED
& PLATFORMS ALLOWED
Questo manuale è adatto per i seguenti modelli
1
Indice
