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The Structural Engineer, Volume 75, Issue 14, 1997
The Chairman So many of us have been brought up on the assumption that the only way you can find out what a structure is going to do is by analysing it before you start the building and then you predict certain movements and you measure them. If the measurements don’t come up to your predictions, the structure is not behaving properly or the measurements are inaccurate - there is nothing wrong with your calculations! The paper outlines a very interesting way of coming at the job from both ends. We get both the feedback and the means of conveying accurately what we have to do. We have to make decisions before we build. We can’t build, monitor and then decide we have built the wrong thing.
And the wind still blows ... Several more readers have joined the debate on wind. Dr Nick Cook, who worked extensively on the preparation of BS 6399: Part 2, has responded to various points raised previously in this column and writes from St Albans: First, Mr M. G. Searle has found the typographical error in eqn C.l. It should, of course, read ...
Currently available design approaches for composite connections treat symmetrically and non-symmetrically loaded joints as two different cases. Based on a reexamination of all available test data, supplemented by results obtained from finite element analysis, a unlfied design approach is proposed. This allows for both the interaction of moment and shear and the influence of axial compression in the column. Although it is believed that the two effects will largely remain separate (i.e. for joints in which moment capacity is affected by the shear-to-moment ratio the influence of column axial load will be negligible and vice versa), availability of a single design approach is clearly more convenient. B. Ahmed and Professor D.A. Nethercot