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.
Many free standing temporary scaffolding structures, such as access towers, major signboards and protection enclosures, need to be anchored to the ground, primarily to resist wind forces. This guidance gives some details of the various applications available.
This document aims to give advice on 38x225 BS 2482:2009 1.5 m support span boards | 38x225 BS 2482:2009 1.2m support span boards | 63x225 BS 2482:2009 2.5m support span boards | 38x225 BS 2482:1981 1.5 m support span boards.
This guidance gives details of various products available which will satisfactorily hold down scaffold boards to prevent movement. Users should satisfy themselves that any proprietary system meets their requirements.
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.
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