2 August 2012
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This Technical Guidance Note describes how drawings for structural steelwork are developed and read. They have their own unique set of rules and nomenclature and it is important for engineers to understand all of these rules in order to communicate and interpret the design of steelwork structures. This guide is split into two sections; the ﬁrst contains the information a designer of the steel elements provides, whilst the second contains the information a fabricator creates in order to manufacture and construct the steel structure. While one feeds into the other, the level of detail each set of information provides is very different, due primarily to the end result. One is informing the manufacture of the steelwork, while the other focuses on its installation.
The Awa Shirasagi Ohashi Bridge, which includes novel structural systems, was recently constructed in Tokushima, Japan (Figure 1). There were a number of severe design constraints for the project. The bridge is located in a very environmentally sensitive area. The site is also in a seismic region and is frequently struck by typhoons. Furthermore, the bridge was to be founded on soft alluvium, and to be constructed to a tight budget. These exceptionally challenging constraints led engineers to adopt a novel combination of structural forms, including the ‘cable egret’ cable truss system, an improved form of the permanent tubular steel pile cofferdam foundation and a steel- concrete composite sandwich slab deck.
The oldest of the Institution’s international Regional Groups highlights its involvement with the National Building Regulations amongst its other activities The South Africa Branch (now Regional Group) of the Institution of Structural Engineers became the ﬁrst to be established outside the UK, in 1937. Subsequently it was merged into a joint initiative between the Institution and the South African Institution of Civil Engineers, becoming the Joint Structural Division (JSD). This Division currently represents some 1345 members in South Africa and is becoming the natural home to members in the Southern African Region. At present there are members of all Institution grades located within the region and the JSD provides a vital linkage between international and local organisations. Having reinvigorated the committee we are gaining traction in many areas and now looking forward to supporting a signiﬁcant number of candidates seeking to participate in the Institution’s examinations. The focus with the restructuring of the committees is to increase the beneﬁt that this grouping can deliver to its members and to generally uplift the standard of engineering within the region. This approach is aimed initially at universities and student membership but, via the codes of practice and continuous professional development, also assisting the profession and Chartered members alike.