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This paper describes the European Prestandard ENV 1090-1 Execution of steel structures Part 1 : General rules and rules for buildings’ and compares it with the national technical specification BS 5950: Structural use of steelwork in building: Part 2: Specification for materials, fabrication and erection: hot rolled sections. R.J. Pope
Mr M. J. Downing (Trent Concrete) We have actually moved a building. It was not built intentionally as a demountable building. We built a single-storey industrial structure in the 1970s, and a smart industrialist spotted that it was a prefabricated building. He bought it very cheaply and asked us if we could move it from one site to another, which we did. That is the only occasion I am aware of where that has been done.
In light gauge construction, the buildability of cold formed sections may be greatly improved by the provision of web openings ,which allows easy integration of building sewices within the section depth. In order to assess the structural implication of web openings, to cold formed sections, the reduction in the web crippling and the load resistances of perforated sections were investigated. The effects of different opening sizes and shapes, and of different forms of stiffening around the openings ,were also studied. A total of six test series with 57 web crippling and 41 beam tests were carried out on cold formed sections with single and multiple web openings; the results of the tests are presented in detail. K.F. Chung