£5.15
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.
2 pages
Scaffold board nailplates are specially stamped toothed strips of galvanised steel that can be applied to new or used boards to prevent or to repair existing end splits. Experience gained over many years by the scaffold industry indicates that the service life of a board can be substantially extended if nailplates are fitted. This revised and updated version contains additional information and guidance on the specification and fitting of nailplates.
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 £9.50 per copy for non-NASC members and £4.75 per copy for NASC members. Members wishing to place an order for 100+ copies must email sales@nasc.org.uk as further discounts apply.
This guidance gives details of the stress corrosion cracking (SCC) that can occur in certain materials when subjected to tensile stress and specific corrosive environments. Although rare in our industry, it can lead to unexpected sudden failure of certain metals. Whilst chemical environments and alloys are highly specific, this guidance explains the process by which SCC can occur and advises that specialist advice may be needed where SCC is possible or has occurred in the past. This guidance is available for pdf download only.
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. 6 pages
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