NOTES ON RECENT DEVELOPMENTS IN BRIDGE ENGINEERING - III

Case II-Resultant stress in tension over portion of section. We now come to the case in which the eccentricity is sufficient to cause at the edge of the section remote from the load point a tensile stress in excess of the direct compression stress. Ewart S. Andrews

THE CHAIRMAN said the paper was a delightful record of work done and brought to a successful issue and provided an object lesson in regard to the surmounting of difficulties in the face of opposition. He himself had been responsible for the construction of a smaller building at the time of the general strike, when it was a very difficult matter to obtain steel, and one had to use just what one could get. Having regard to the fact that the amount of metal required in the construction of the Epsom Grand Stands was so enormous, the results attained were very creditable to everybody concerned. He did not know whether a time limit was imposed. The manner in which the large girders were raised was also very creditable. A girder weighing 33 tons was very difficult to manipulate, and to have raised such a girder into its position in less than 24 hours was a notable achievement. The method of using the triangular steps had also impressed him. He did not quite follow how the reinforced concrete part of the work was done, but the method adopted seemed to be an artful way of getting over the difficulties without putting a tie of reinforced concrete all the way up and having to bond it in. It was doubtful whether everybody would have thought of that method. The paper was full of “ meat,” and he was looking forward to succient criticisms of the methods of construction from the many experts whom he saw before him in the body of the hall.

In giving a title to this paper, I have referred to the terms “bulking” and “grits,” and I think as a preliminary an explanation of my meaning is due. J.E. Worsdale