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riskybizz  
#1 Posted : 11 November 2011 10:10:16(UTC)
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riskybizz
Good morning all, Does anyone have specific guidance for the provision of bay heights for independent scaffolds? Would you consider a bay height of 3.5m adequate and reasonable? Steve
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chas  
#2 Posted : 11 November 2011 15:24:03(UTC)
Rank: Super forum user
chas
Unless the scaffold is made to a specific design I would think a 3.5m bay height is too much. I was always taught that for an inspection/light duty scaffold the first lift could be no more than 2.7m from ground with each working lift no more than 2.1m. For a general purpose scaffold the first lift could be a max of 2.7m with each working lift no more than 2m. For a heavy duty scaffold it would be a max of 2m for both the first lift and each subsequent working lift. (I do not think BS/EN12811 specifies a max bay height) Hope this helps.
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AllanFS  
#3 Posted : 11 November 2011 17:01:06(UTC)
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AllanFS
As a former scaffolder I imagine the lift height is at that height for a reason, say access purposes. From a standardised and text book point of view chas is correct in those dimensions he mentioned my experience a 3.5 m lift is quite common on some jobs due to operational requirements. Ask the Scaffs why is it that high in the first place and if they were told to put it at that height and by whom myself have did lifts slightly bigger in the past but have Plan Braced the standards underneath the lift for added stability. If in doubt ask scaffs to add some Plan bracing.
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boblewis  
#4 Posted : 11 November 2011 23:19:16(UTC)
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boblewis
TG20 regards bay heights of 2m as being the maximum without a formal design being undertaken. The old BS also regarded 1.5 to 2m as the standard range. Bob
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boblewis  
#5 Posted : 12 November 2011 12:17:46(UTC)
Rank: Super forum user
boblewis
I should have added BS EN 12811-1 only refers to a basic 2m lift heights as it is specific to system scaffolds and any other bays heights, other than a 2.5m at ground level, will require formal design. Bob
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