TG4:19 had amendments predominantly in relation to the orientation of ring bolts where current thinking is that settlement is probably greater than side wind loads so reduces potential shear loads on the bolt. Other minor changes were cosmetic. A recent update in April 2019 saw the removal of one reference only when the guidance was reissued as TG4:19.
In an ideal world all working platforms should contain no gaps or holes. This updated guidance is a simplification of the previous 2003 issue regarding working platforms, which have additional requirements over those that are normally provided on an access scaffold. Quality and the thickness of ply used are integral.
The full suite of publications includes the following:
TG20:13 eGuide software, TG20:13 Design Guide (206 pages), TG20:13 Operational Guide (226 pages) and TG20 Pocket Guide (32 pages).
To buy the TG20:13 eGuide on its own, you need to have purchased the TG20:13 Full Suite before.
The TG20:13 eGuide may only be used on one PC/laptop/Android device at any given time.
Price shown includes VAT and £12 P&P.
This guidance explains the differences between ‘supplementary’ and ‘check’ couplers and gives typical design applications where high coupler forces could be expected and where additional loadbearing capacity to connections may be required. It also contains guidance on coupler configurations and expected safe working loads (SWLs) where supplementary couplers are used. To ensure that SWL values are as accurate as possible, data provided within this document is based on practical testing rather than calculation.
This guidance gives details of the Fire Retardant treatments available for timber scaffold boards and battens.
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