The TG20:13 Design Guide has been withdrawn from sale as we enter the transition period to TG20:21. The TG20:21 Design Guide is available electronically via the NASC ePortal TG20:21 subscription. Printed copies will be available later in 2021, to holders of NASC ePortal TG20:21 subscriptions.
Intended predominantly for engineers and designers, the TG20 Design Guide provides technical data, commentary, and source material for use by competent and suitably qualified scaffold designers in circumstances which are outside the scope of standard solutions provided in the TG20 Operational Guide and TG20 e-Guide software.
For further information about TG20:21 click here.
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Scaffold tube storage racks are a common feature of every scaffolding contractor’s yard and many long-term live sites. Whilst tube racks are usually constructed as basic birdcage-like structures, they generally support many tonnes of equipment, so their design needs special consideration. This guidance note considers the design, use and maintenance of scaffold tube storage racks.
A 32-page, full-colour pocket guide in A6 format. This document summarises clearly the requirements for TG20:21 compliant scaffolding and offers indispensable guidance to the scaffolding operative on-site. Price is £6 per copy for non-NASC members and £3 per copy for NASC members. NASC contracting and supplier members are also entitled to a discount on orders in excess of 100 copies.
For more information and to order 100+ copies email firstname.lastname@example.org
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.
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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