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The real behaviour of structures in contact with ground involves an interactive process beginning with the construction phase and ending with a state of balance after a period of adjustment of stresses and strains within the structure and within the ground influenced by the structure. S. Thorburn
Mr Robert Siggs (M): I wholeheartedly agree with Mr Tietz’s statement ‘good building is achieved when good design is well executed’, but let us examine this statement in greater detail. Good structural design is, hopefully, achieved by every member of our institution but, in practice, how good are we? Some of us make arithmetical errors, some of us omit details on drawings, and (dare I say) some of us make errors of judgment. Remember that very small box in the corner of our calculation sheets and drawings marked ‘checked by’? How often is it signed? Not often. Our good design is, hopefully, well executed on site by builders but, in practice, how good are they? Damp-proof courses are omitted, brickwork is not properly bonded, and reinforcement is misplaced. Who discovers these shortcomings, structural engineers, other professionals perhaps? I shall return to who later.
Mostly micros The use of microcomputers in structural engineering, which was raised in this column several months ago, has attracted considerable interest among our readers; the correspondence this month has been concerned predominantly with their application and the resulting implications for many of us. Verulam