Rank: Super forum user
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Today I was doing a safety inspection on a small building site (two semi-detached houses) to check the brickies were working safe, that the scaffolding was safe, that they were using brick-guards, ladders tied etc etc.
The scaffold is up to it's last (fourth) lift, and I was curious that above the second lift there is no diagonal bracing - no ledger bracing and or facade bracing, just standards/ledgers/transom tubing.
I called the scaffolder and he said he was using the Ready lock system which doesn't need diagonal bracing if the transoms are set hard up against the wall of the building.
I'm also concerned that the scaffold is just on 3 sides of the building and not tied at all to the building, the 4th side of the building is just six inches away from the neighbour so that wall is being built from the inside (brickies standing on platforms/towers)
I need to check what he says about not needing diagonal bracing, where can I read/learn about the Ready Lock scaffold system?
John
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Rank: Forum user
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Rank: Super forum user
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Thanks TFCSM, yes I did find the forum through google. I'll have to register as it keeps chucking me out when I find an interesting thread....
Construction Forums are often not very reliable, like this place sometimes!! So I was hoping for a guide. There are plenty of guides and inspection guidance on standard scaffolding, but I'm not familiar with 'Ready Lock', he also referred to it as 'Easyfix'.
I've had problems with the scaffolder before - before I came along there was no initial handover cert., no inner guard rails, no weekly inspections....... :o/
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Rank: Forum user
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JohnW
I know that Trad using a system that the scaffolder refer to as dog bones, these negate the need for ledger bracing, so not sure if that is what you are referring too, however it still requires facade bracing.
Not sure what standard they comply with so suggest that you could give the NASC a call or look at a copy of TG20 but must admit I odd not Rembrandt seeing in there.
Regards
PaulR
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Oh dear the spell checker has gone mad, these I pads are not what they are cracked up to be, hopefully you got the jist of the thread
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Rank: Forum user
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John
The position on Ready Lock is as per existing TG20 guidelines. These components are regarded as “system type” components.
Basically, if a scaffold has ready lock (or similar product type) installed and the ledger bracing is omitted, then one of three things should apply:
1. A design for the scaffold should show the ready lock in use and ledger bracing omitted
2. The manufacturers (or users) of the ready lock should have some robust test data to demonstrate that ledger bracing can be omitted when used.
3. Ledger bracing should be installed if none of the above is available.
Try typing in generation ready lock into google you might find some useful stuff on there. I have heard that the HSE will either ask for one of the above
Hope this helps
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Rank: Super forum user
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Sounds like what I know as "Kwikstage" I seem to recall there's NASC guidance aimed specifically at this system. The thing surely needs to be tied, and on a new build it should be readily possible to use window reveals to tie-to using tube and fitting items as required.
You state the 4th side is only 6 inches from the neighbouring property?! I can't fathom how building stds allow that. How do you maintain/point or repoint in the future?!!
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Rank: Super forum user
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Hi Smith, thanks. When I did the google 'generation ready lock' the same forum came up again:o)
I've tried to register but said my login was spam so have had to contact the admin.
Anyway,
smith6720 wrote:
1. A design for the scaffold should show the ready lock in use and ledger bracing omitted
2. The manufacturers (or users) of the ready lock should have some robust test data to demonstrate that ledger bracing can be omitted when used.
3. Ledger bracing should be installed if none of the above is available.
That should be useful, I may be able to use that to persuade him to put in ledger bracing at least. In total might only need about 18 tubes.
John
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Rank: Super forum user
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ron, thanks, we cross-posted. Sorry I think the buildings will be joined, client owns the neighbouring building which is 150 years old.
I have a few of the NASC guidance booklets so I'll take a look for one on 'systems', but for peace of mind I will try and persuade some bracing using the smith6720 advice. The scaffolder has been a nightmare and is clearly not up to steam on some things, like internal edge protection each time he adds a lift and other details.
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Rank: Super forum user
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That 150 year old building is unlikely to have a DPC. I'd be wary of how these buildings are to be joined up, the ventilation of that gap, and the amount of spoil (mortar and other debris) falling into that gap.
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Rank: Super forum user
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Thanks Ron. I guess the ventilation gap between the structures is a subject beyond my remit but I'll have a word with the client who is also the designer, and he'll know if the old pace is damp proofed. I've been in the building and it has basements as all these old buildings in Leamington have.
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Rank: Forum user
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The scaffold should be erected following the manufactuerers guidance.
if this cannot achieved you will need a scaffold design.
As a general rule ties for system scaffold should be in place from a height of 3 metres and the frequency of ties should be every other standard at every other lift.
Fascade bracing needs to be in place as per the manufacturers guidance I think for kwik stage it is every five bays and should extend up to the top lift of scaffold.
Obtain a copy of the manufacturers manual for clarification a well known scaffold supplier in liverpool may just be able to help you (george roberts) found them really help ful myself in the past.
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John
This type of scaffolding is "not" kwikstage scaffolding it is tube and fitting which must be errected to TG20:, unless you have the information previously stated, the scaffolding is erected as per any tube and fitting scaffolding, with facade bracing, ties as per design or general requirements required by TG:20:
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Rank: Super forum user
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All system scaffolds must comply with BS EN 12811-1 - TG 20 refers to tube and fitting scaffolds
You will need to refer to the individual manufacturer as they have defined the standard designs permitted without formal design for the specific task.
Bob
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Rank: Super forum user
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I do remember that the Kwikstage system does not need diagonal bracing as the transome above secures the face and rear of the scaffold BUT they must be installed when erecting until the lift is complete and may then be removed - They must be reinstalled for striking - there were some instances back in the late 70-early80s when these collapsed whilst being dismantled but the manufacturers instructions make this clear.
The other two systems commonly seen are the cuplock from SGB and the NSG-Plettack system, each has their own foibles.
Bob
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