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Jayne Proctor
Member - 1 post
Mary,
I agree with Adrian's comments. The CITB (Construction Industry Trianing Board) do offer some guidance on windspeeds in relation to scaffold useage, they quote a figure of 17 mph (7.7 m/s) as the speed at which all work on a scaffold should cease. 25 mph as the speed at which mobile towers etc should be tied into the structure for safety and 40 mph as the limit over which mobile scaffolds should be dismantled. This information comes from "Construction Site Safety, guidance 5, part 2. CITB reference GE700 (which has just been updated so my copy is an old one). Having worked at heights myself I would re-inforce Adrian's comments about the behaviour of materials in what may seem relatively light winds at ground level and the fact that wind speeds increase with elevation so a 10 mph wind, 20 feet off the ground can easily become 15 or 20 mph 20 feet higher up, this is worth noting if you have split level roofs and the wind speed gauage isn't at the highest point.
Regards
Peter
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