![]() ![]() must be designed using other appropriate standards including BS 5975 (where permissible stress can be used) which covers a large variety of scaffolds. Ian Nicol went on to say "All other types of scaffold including bridges, façade retention, buttresses, all types of shoring and temporary roofs etc. Yes there are some significant changes to accommodate and the justification of the design has changed somewhat, but it will not change what actually needs to go into the scaffolds to make them work in calculation. The implications for scaffold designers are not as complicated as some people are suggesting in my opinion. Is that a good thing? Is that a bad thing? Well it depends which side you are looking from I suppose. TG20 only provides guidance for all other structures associated with an independent scaffold including, loading bays, stair towers etc. TG20 provides confirmation of the maximum height that these scaffolds can now be built, together with associated technical data. These solutions cover traditional scaffolds that were originally erected in accordance with BS 5973. The situation is clarified by Ian Nicol, Chairman of the NASC Working Group for TG20: "The scope of TG20 only covers scaffolds that are supported by existing buildings and are one bay width. This means that all scaffolding in the UK that was originally built in accordance with BS5973 will have to be built in accordance with TG20:08 (or BS EN 12811-1) from this date onwards. The deadline for the switch over from BS 5973 to TG20:08 was the 1st January 2011. ![]()
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