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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
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
Moment connections are crucial to many common types of steel structure. Despite substantial research there are no fully agreed design procedures for such connections. The SCI/BCSA Connections Group has been working to develop standardised approaches to moment connections and will shortly publish Joints in Steel Construction - Moment Connections. Within the National Steel Construction week a discussion will take place at Imperial College of Science, Technology and Medicine in London on Thursday, 18 May 1995, jointly sponsored by the Institution of Structural Engineers, Imperial College of Science, Technology and Medicine and the Steel Construction Institute. This discussion will review the principal decisions that underpin the development of these standardised methods. D.G. Brown