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The Structural Engineer, Volume 8, Issue 1, 1930
THE CHAIRMAN (Mr. H. J. Deane, Past President) said he might possibly add to what Mr. Burns had said in connection with “ slump,’’ referred to on page 440. Some might wonder why the engineers carrying out this work should have made a point of having this slump taken, but Mr. Burns, quite rightly, had not mentioned the question of specification. He had been dealing solely with the difficulties and intricacies of foundations which were rather out of the ordinary. I n order, however, to obtain satisfactory results, bearing in mind the fact that the Contractors desired to use chutes for placing the concrete, one had to arrange a specification which would meet these conditions, and at the same time give the amount of strength that was necessary for the work in general.
Readers of The Structural Engineer will be pleased to learn how much interest and attention the very able address by Mr. E. F. Sargeant, to the Yorkshire Branch of the Institution, last year, has attracted. Mr. Sargeant, as Chairman of that Branch, chose as his subject “The Romance of Silica,” and dealt with it in a particularly fascinating manner, as may be judged from the text of his address, which was published in The Structurcrl Engineer for June last. It was, in December, made the subject of an article on the “leader” page of The Times, and we understand that Mr. Sargeant likewise received a highly congratulatory letter from Sir Robert Hadfield in the course of which Sir Robert commented on the amount of time that must have been involved in writing so instructive a paper, which interested him the more in so far as he had himself evolved and invented silicon steel, and expressed his high appreciation of Mr.Sargeant’s own “fascinating and instructive paper.”
Welding has long been considered as the art of uniting pieces of similar metals by ham- mering or compression when raised to a temperature short of the fusing point; but today a broader interpretation must be accepted to include autogenous soldering in which fusion occurs, and any added metal is similar to the pieces to be joined together in firm union. Such autogenous soldering has long been practised with lead. J Caldwell