SCI: Best Practice for the Specification and Installation of Metal Cladding

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Best Practice for the Specification and Installation of Metal Cladding and Secondary Steelwork

Size: 1.77 MB | Format: PDF | Publisher: SCI | Year: 2006 | pages: 77 | ISBN: 9781859421710

This publication presents guidance to designers and contractors on the specification and installation of profiled metal cladding systems and the supporting purlins and side rails. Built-up cladding systems and insulated panels are both considered, but single-ply membranes supported by structural decks are outside the scope of the publication. The guidance covers many aspects of cladding specification, including a brief description of the available systems and their components and an overview of the various performance criteria that should be considered by the specifier. These include weathertightness, appearance, thermal performance, acoustics, durability and structural capacity. Particular attention is paid to the structural performance of the cladding, since inadequate strength and stiffness not only undermine the safety of the building, but also impact on several of the other performance criteria such as airtightness and durability. The specification of the purlins and side rails is usually achieved by reference to manufacturer’s safe load tables and supporting technical information. However, there are several important issues that need to be brought to the attention of the secondary steelwork designer in order to ensure a safe and efficient structure. In particular, there is a need for good interaction between the building elements, especially in relation to the provision of lateral and torsional restraint. The sections on cladding and purlin installation provide an overview of the issues that need to be addressed in order to meet the performance criteria identified by the building designer. Many of the issues covered in this publication have been brought to the attention of the SCI by industry representatives, whose advice and knowledge is the foundation for the guidance presented herein. The aim of the guidance is to promote good practice across the industry, leading to improvements in Health and Safety, efficiency and building envelope performance. Although written with site practitioners in mind, much of the guidance should also be useful to architects and structural engineers involved in the specification of the building envelope and supporting structure

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