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Posted By Peter MacDonald
Two quick questions as my web searches have bared no fruit.
1. What constitutes 'competence' of a scaffold designer. Is there a specific qualification?
2. What is the fundamental difference according to TG20 between debris netting and sheeting.
Thanks in advance
Pete
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Posted By Martin Daly
There is no specific qualification in the UK but there is in other EU Countries to being a scaffold designer.
The difference between debris netting and sheeting. debris netting forms a resistance of up to 85% to the wind.
Sheeting its 100%.
Martin Daly
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Posted By Peter MacDonald
Thanks Martin.
One more question if I may.
I've been told that if debris netting or sheeting is used then then scaffold must be designed but looking at the NASC checklist on when a scaffold must be designed I don't see any mention of either. Can you shed some light on that.
Thanks in advance.
Pete
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Posted By P.R
Hi Peter,
You will find that anything other than a "basic standard" scaffold will require a design. Adding debris netting or Mona-flex sheeting will create a "sail effect". Because of this, it needs to be designed for wind loads to be calculated and in the event that additional ties are required.
Regards
PR
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Rank: Guest
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Posted By Peter MacDonald
Thank you
That's what I was thinking but I'm surprised it's not mentioned in the NASC list I downloaded from the HSE website.
Pete
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