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practIcal applIcatIoNs for coNstructIoN aNd the buIlt eNvIroNmeNt


Innovation & Research


Issue No. 90 IN thIs Issue


Buildings Managing climate change risks


Climate Change Managing climate change risks


Dredging Reducing dredging risks


Flood Risk Management Future proofing


Infrastructure Managing climate change risks


Innovation Role of middle management


Management Role of middle management


Materials Concrete-filled braces


Renewable Energy Renewables in wine growing


Structural Engineering Concrete-filled braces


Sustainability Developing new water resources


Water resources Developing new water resources


4 4 8 6 4 2 2 5 3 5 7 7 also at www.innovationandresearchfocus.org.uk Best practice guidance


for light steel infill walls Light steel infill walls are used extensively on a range of building types and are an eco- nomic and efficient method of providing an external wall capable of resisting wind loads and supporting a range of cladding types. Infill walls are designed on a project-specific basis to form the inner leaf of an external façade. Currently, there is no code of practice or industry standard specifically for this type of construction system, yet it is vital that they are designed and installed correctly.


T


he Steel Construction Institute (SCI), in collaboration with leading manufac- turers and suppliers of light steel sys-


tems, are producing best practice guidance for the design and installation of light steel infill walls. Infill walls consist of vertical C-shaped light steel sections installed into U-shaped horizontal tracks at the top and bottom of each panel. The infill panels are generally assembled in-situ, but some sys- tems can be supplied to site in panel form. The need for best practice guidance was


established during discussions with mem- bers of The Light Steel & Modular Fram- ing Group, where concerns were raised about the potential for poor practice to occur. The form of construction has simi- larities with that of internal dry-lining partitions. However, there are many sig- nificant differences and systems intended for internal dry-lining partitions are not suitable for external infill walls. Some of the major differences are acceptable steel grades, acceptable steel thicknesses, speci- fication of coating (e.g. galvanising), design loads and detailing considerations. The intention is to provide guidance on all aspects of light steel infill walls, including:


• types of steel sections; • structural design considerations; • setting out, tolerances and movement provision;


• fixing types and spacing; • installation guidance; • health and safety recommendations; • secondary steelwork considerations; and • site check lists.


The project has involved researching the best practice for design and construction from discus- sions with leading manufacturers and suppliers of light steel systems in the UK. The best prac- tice guide will not provide detailed structural de- sign guidance for light steel sections in general, as this is provided in other documents such BS 5950-5, BS EN 1993-1-3 and SCI publication


www.innovationandresearchfocus.org.uk Components of light steel infill walls. Light steel infill wall installed in a steel frame building.


ED005 Technical Report: Design of Light Steel Sections to Eurocode 3. The best practice guidance for light steel in-


fill wall is expected to be published in Septem- ber 2012.


For further information please contact Andrew Way, The Steel Construction Institute (01344 636577; E-mail: a.way@steel- sci.com).


Innovation & Research Focus Issue 90 august 2012 1 Top track Jamb Cill


Base track


Lintel


General stud


august 2012


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