Material Selection (page 12)
Technical Library
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This BSSA Special Report, published in February 2003, provides a synopsis of a research project carried out by the BSSA on the suitability of stainless steel tube & fitting products for internal building plumbing applications. The material, environmental, economic and aesthetic benefits of stainless steels in plumbing applications are outlined and the use of stainless steel plumbing in Scottish hospitals reviewed. European regulations are summarised, before a discussion on the market place perceptions of stainless steels and cost analysis is discussed. It is concluded that stainless steel is particularly suited to large-scale plumbing installations, such as hospitals, children?s and old peoples homes, prisons, schools and hotels, where health and safety are prime considerations.
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This BSSA Special Report summarises the report prepared by Arup Research and Development prepared to take account of developments in the use of stainless steel in concrete reinforcement since the publication of BS 6744:2001 and the Highways Agency note BA 84/02. The issue of corrosion of reinforcement is discussed and followed by a summary of the use of stainless steel in concrete reinforcement. Guidance on selection criteria of the BS 6744 grades is shown and followed by notes from the BA 84/02 on cover, design crack width and the need for silane treatments. Finally design examples are shown and the cost calculation model discussed.
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Paper delivered by Chris Quinn at BSSA Conference 2000
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This 12 page paper by Chris Baxter, Group Technical Market Support, AvestaPolarit Ltd. covers the issues of distortion during fabrication and welding, control of stainless steel welding processes and post fabrication cleaning. Buckling distortion can result from either poor design or welding practices. The key factors for good welding are clearly defined welding procedures (BS EN 1011 and BS EN 287 and BS EN 288 are mentioned), control of heat input, temperature control and cleanliness. Welding electrode selection and methods including TIG, MMA, FCA, plasma, submerged arc and stud welding are covered. Finally, the importance of careful heat tint removal (temper coloured areas) is discussed by either mechanical abrasion or chemical pickling cleaning methods is discussed. Although this establishes the corrosion resistance for the particular grade welded, care is needed with chemical pickling as it can change (dull) the aesthetic appearance of the surfaces.
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