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Posted By Lindsey Knox
I'm doing a risk assessment on manual handling and I'm looking for a definition of what Safety footwear (200 joules protection) and Protective footwear (100 joules protection) means in layman terms. Basically how much weight does each type withstand if something is dropped ? Can anyone point me to a good source of info on this. thanks
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Posted By Bernard Grainger
If the Data refers to Joules 100 it is saying that the footwear will with stand a force of 1kg accelerating at 1 metre per second squared (or 1 Newton)
For a Manual Handling Assessment I suggest the potential for the acceleration of an item manually handled being equal or greater than this would be minimal to non existent as any item ought only to be falling 1m or less from hand to foot (approx.), with a mass/weight of less than 100kg.
Where such a risk exists then manual handling should be avoided.
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Posted By Merv Newman
How about a 2 1/4 pound weigh dropping from about a yard ? (2.204 Lbs/39.7 inches) Try that in open toed sandles. Even with heavy duty socks.
God, what a tangled web we weave when first we practice to metriceise ! And I used to know what a Pascal was. (ok, 1gm force per M2) innit ?
Merv
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Posted By Lindsey Knox
Thanks Bernard and Merv. Physics was never my strong point but with the extra clues you gave me I came up with a safety footwear manufacturer quoting that a 200 joule toe cap will withstand a 20kg wedged object dropped from 1m, which would cover our handling operations.
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Posted By Bernard Grainger
Lindsey, for future ref
Joules 100 = 1 Newton
divide by 1000 gives you Joules/cm = 10.2 kg
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Posted By David J Jones
O.k - but how many miles to the gallon is that?
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