£5.15
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.
2 pages
This guidance note is concerned with advice for the safe erection, use and dismantling of temporary suspended chutes intended for the conveyance of waste construction materials. The guidance covers chutes constructed of detachable sections made of metal or non-metallic material, attached to scaffolding. 4 pages
TG20 provides the definitive guidance for scaffolding constructed with tube and fittings throughout the UK. TG20:21 builds on TG20:13, and makes the eGuide software, Design Guide and Operational Guide available via the new NASC ePortal, on a subscription basis. The eGuide produces pdf compliance sheets, which now include more information and an illustration. The guides are fully searchable online. The ePortal is available here from computers, tablets and smart phones via web browsers. Each subscription gives access from multiple machines, but only one machine at a time. Purchase and use of a subscription implies acceptance of the subscription agreement, found here, by all users. The price shown includes VAT at 20%. If you are already using TG20:21 and wish to continue to use the same login details please do not purchase a new subscription, please purchase a subscription renewal here.
This document provides best practice for the use and application of steel and aluminium prefabricated beams. Included is information regarding beam types, uses, joints, handling, transportation and storage. Due to the wide variation of beams available on the market, it has not been possible to include individual load capacities, but information regarding tension and compression chords, correct methods of lacing, bracing and connections to standards and puncheons provides vital information to ensure that beams are correctly installed to support their maximum safe working loads. This guidance is available for pdf download only.
BS2482:2009 defines both visual and machine strength grading standards for 38mm x 225mm boards supported at 1.2m spans and 63mm x 225mm boards supported at 2.5m spans; and machine strength grading standards only for 38mm x 225mm boards supported at 1.5m spans. This guidance is reviewed on the basis of removing A grade boards that should not exist. A visually graded board is still a BS2482 product and should be marked as such on the end band. 6 pages
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