Author: Akroyd, Thomas
First published: N/A
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The assumption made by the authors that the bolt load produces a uniformly distributed pressure on the outer surface of the plate isuspect, to say the least, and it would have been useful to test this assumption by an analysis of the internal stresses in the bolt head. A study I have made shows that the yield strength of reinforcing steel (i.e. general grade) in Kenya has a coefficient of variation of 17 per cent. Given that this applies also to structural steel, which is fairly certain, could the authors indicate the effect that this would have on their findings? They appear to presume that steel is an exact product. P.A. Campbell
It seems to me that my professional career has spanned a period of progressive and rapid changes, including as it does the start of the nuclear age, space travel and the second World War and a period, since that war, of development in technologies that has stemmed in large part from the need to defend ourselves. Underlying this need, it appears to me, has been a major increase in speed whether in communications or in weapons which, in turn, has made the reaction time to events as they occur even shorter. Derek R.R. Dick