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The Structural Engineer

The paper outlines the basic principles and design philosophy underlying the design of both bolted and welded joints. It emphasises the need for joint design to be consistent with assumed structural behaviour. The several kinds of bolt currently in use are defined, their strengths compared, and the various kinds of welded joint described. An outline of design procedures is given for joints using all three bolt types, together with an example of the design of an eccentric bracket. Moment connections, giving rise to combined shear and tension in the bolts are touched on, as are the origins of prying forces. An outline of design procedures for welded joints is given, with the same example of an eccentric bracket used to illustrate the differences berween bolted and welded joints. Practical and economic considerations are presented and the paper concludes with a number of typical details, again comparing bolted and welded solutions. F.H. Needham

The Structural Engineer

Mr D. Allen (M): The author has developed some useful curves, conveniently presented in his Table l. I agree with the philosophy of using the full cross-sectional properties for design; it has always been confusing to have to deal with effective sections, especially when the effectiveness is determined by the stress level. How simple to use one section for all computations!

The Structural Engineer

President’s Diary Mr John Derrington plans to attend the International Energy Conference in Munich in the week starting 8 September and, as President-Designate of the International Prestressed Concrete Federation (FIP), will be taking the chair for one of the working sessions of a biennial FIP symposium in Bucharest in the period 15-19 September.

The Structural Engineer

This paper discusses the behaviour of typical residential building facade walls of brickwork, when they undergo differential settlement. I.A. MacLeod and S. A. Abu-El-Magd

The Structural Engineer

Professor Michael Horne succeeds Mr John Derrington as President of the Institution on Thursday 2 October next and will give his Presidential Address ‘We, the academics-what are we good for?' at an Ordinary Meeting at 6.00 pm that evening at 11 Upper Belgrave Street, London SWlX 8BH.

The Structural Engineer

The paper suggests how the Institution of Structural Engineers, in conjunction with the local education authorities, could promote and stimulate an interest for young people who could be seeking a career in structural engineering at either chartered or technician engineering level. The training of chartered engineers is discussed, together with midcareer management development. C.J. Kelly

The Structural Engineer

Training: a hazard The ‘knock on ’ effects of political decisions and policies are frequently very evident in hindsight, but rarely so initially. It was easy to anticipate that cuts in public spending would have unpleasant consequences for both sides of the profession, although doubtful whether many appreciated how severe these would be. Now Professor A. Vardy draws attention to the next domino which is threatened, when he writes: In recent years, the number of places available for civil engineering graduates to receive training under agreement has reduced considerably. This year, major consulting firms are perpetuating this trend, and some are even refusing to offer any formal training at all. Verulam