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Posted By Kevin Ray
Hi All,
If anybody could help me by adding any other measures to the following scenario or confirm that the method of work carried out by the contractor is safe it would be most appreciated and settle a circular discussion.
New steelwork has been erected to create an extension (22,000 Sq ft) to a supermarket store and is approx 10 meters in height. The contractors installing the roof are the people in question.
Their method of installation is to first attach netting on the underside of the roof and erect a handrail using scaffold tubes(3 rails deep 470mm space between each rail) around the edge of the structure. This will all be done via a cherry picker. From here the first sheets are installed from the top side using access via the existing roof and the contractors intend to continue forward using the previous sheet as a working platform. The rescue plan should someone fall into the netting and not be capable of self rescue will be to use the cherry picker located on the underside of the netting.
Does anything else need to be considered or done in order for them to continue work.
Many Thanks in anticipation
Kev
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Posted By Mike Draper
Ensure no one is in the area below - barrier it off. You wouldn't want a bolt through your head, would you?
If they can't self-rescue, how will the cherry-picker help? The individual will be on top of the net and the cherry picker below.
Ensure the roof workers have received suitable training for work at height and understand the hierarchy of control.
The guardrail should also include a kickboard.
If the weather is poor (wet and/or windy), plan to make safe and stop work. The sheeting will be treacherous to walk on if wet and impossible to handle if windy. Plus, you wouldn't want to be up in the cherry-picker when it is windy.
If the cherry-picker is suitable for making an effective rescue, make sure it is safely stored, fuelled/charged and that there is someone who can drive it on duty at all times.
Make sure the users of the cherry-picker wear harnesses at all time, clipped to the anchor point in the base of the working platform.
Make sure that they check their harnesses regularly and keep them in good condition.
Can't think of much else.
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Posted By db
There's one thing you haven't mentioned which many get wrong - that is the edge protection should not just go around the edge of the new steel but also prevent anyone from accessing the existing building.
The typical response is that no-one is working on the new roof so why bother but of course accident history shows us that this is how people tend to fall through fragile roof lights or off the roof - "they weren't supposed to be there". And reg 11 of WAH regs explicitly says you must prevent access to areas of danger etc.
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Posted By Robert K Lewis
Kevin
Not enough information here to decide if the method proposed is correct. I would need to know the deck system and the pitch of the roof as a start point. It is also not clear whether the sheeting is running along the pitch and not across it.
The suggested use of the cherry picker implies that the netting is not being fastened to the underside of the roof steel but is rather fixed horizontally across the bays beneath the work area. In such a situation this is not an appropriate method of work. If the netting is as close to the roof deck as possible then rescue can always be undertaken from above. After all does the method state how the net is going to be released - cut through it and let the man drop through!!!?
So with the information currently given the method is not acceptable for work.
Bob
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Posted By Bob Youel
is this another case of a Planning super/Coordinator doing little for their pay?
Sorry if I seem a bit of a cynic its just that this area should have been dealt with/ highlighted by such people at an early stage and time and again I come across similar questions late on in a programe of work
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Posted By db
This is not a PS CDM -C issue but purely a contractor issue. There is no requirement for them to tell the contractor how to do the work.
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Rank: Guest
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Posted By Kevin Ray
Thank you all for your response it has been most helpful so far.
Robert, to clarify a few points. There is no pitch on the roof it is a flat 'Sana' roof that is being installed (Not sure if that is the correct spelling). The netting is attached to the underside of the steel making the maximum fall from the leading edge approx 1 foot at any point. The idea of the cherry picker cutting the man from underneath was if a situation arises that lifting the man back to the deck may cause more damage, rather the rescue man cut him out in his current position and lower him to receive further treatment.
Many thanks again
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