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Posted By John Mac Carthy
If you were asked to send a maintenance working onto a roof section, in this case the guttering area, to repair some minor leaks, which is in-between two large warehouse in 'V' shape sections where a MEWP doesn't fit and the roof is not classified as fragile, its steel cladding. Strength undefined.
It is void of edge protection and a guardrail etc, my instinct, install a temporary guardrail to prevent loss of balance and aid access, as well as restricting the maintenance workers area of operations.
The guardrail over a span of approx 20m won't act as a suitable support for fall protection in my opinion, i.e. harness attachment. No anchor points are available either.
What would you do?
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Posted By Ron Hunter
As I read things, edge protection at either end of the valley could be a zip-up or birdcage scaffold if less than 5 metres. You'll also need facility to get men and materials up there safely.
I would always presume a roof to be fragile unless someone shows me strong & conclusive evidence to the contrary.
Otherwise I'd require crawl/spreader boards with lightweight integral barriers for edge protection along the entire valley length.
I don't think the HSE would accept anything less.
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Posted By CFT
John
Can you get weight boxes to the area to secure on a lanyard?
CFT
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Posted By John Mac Carthy
Thanks for that just one thing for the crawl/spreader boards with lightweight integral barriers - dp you have any links to a photo of who supplies these, and are they to be supported by a bridge scaffold or on the roof?
The weight boxes, not sure, how are they installed generally? & would they need a wall fixing or an independant fixing?
Not sure the walls are suitable for any attachments, thick enough.
Comments welcome please.
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Posted By Ron Hunter
In all honesty John, I'm only making reference to the guidance and pretty pictures in HSE publication HSG33 (which I commend to you).
Sometimes, the crawl boards may have to be made to suit the roof (ensuring enough structural members are included in crawl board spans to adequately support the load).
Depending on the pitch of the roof, and if the crawl board sections are deep enough, you might get away without guardrails.
Maybe you could speak to the National Federation of Roofing Contractors.
Your client should also consider installing permanent protection if frequent cleaning of the gutters is required.
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Posted By Chris Pope
Maybe a net or crash deck imm below the fragile area
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Posted By Ron Hunter
Fair point from Chris, although the WAH heirarchy says prevent the fall first.
Nevertheless, it would be a relevant precaution for those tasked with installing the crawl boards in the first place!
Isn't it often the case that the installation of the temporary protection (be it edge protection or highway traffic management) is by far the most hazardous operation involved in the job, yet hardly rates a mention in the method statements or CPP?
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