Issue 7

At the invitation of the Council, Mr. Edmund Happold (F) prepared a paper 'The Household Cavalry Barracks, Knightsbridge' for presentation at the Public Works Congress in November 1970 in the session sponsored by the Institution. The text of the paper and of the discussion among the small audience that followed its presentation appears in the Conference Proceedings which is shortly to be published. Edmund Happold

The lateral buckling of beams is a complicated phenomenon, the maximum elastic bending stress necessary to cause buckling being dependent upon the geometrical and material properties of the beam, the type and position of the loading and also the support conditions. This paper presents a design procedure which enables all of these factors to be allowed for in an accurate, yet simple and direct manner, for 41 different cases of loading and support. The proposed method is both more accurate and more versatile than existing methods used in design codes. D.A. Nethercot and K.C. Rockey

A Procedure to determine the static and incremental collapse load factors for plastic frames is introduced. The essential feature of the procedure is a systematic approach to the use of Neal's and Symonds's method of combined mechanisms. M.Z. Cohn and D.E. Grierson

Dr. W. MacGregor: The steelworking facilities have been clearly described, and the authors have said that although they were not responsible for the plant and production lines they were deeply involved in the general planning and in the complex detailing and programming. This is an understatement-I know what work they did, and at no time on this job were we held up for lack of detail drawings. This is a tribute which certainly cannot be paid to every firm of consultants.

Mr. H. Hitch: It is our belief in the aircraft industry that we have been involved in perhaps a rather higher measure of innovation over the last few years than other industries. Are we adequately conscious of the implications of this innovation? On the moral issues the main feature of our concern is that we reckon that we have no right to introduce to the general public any new device-I am thinking of an aeroplane-which is less safe than the standard of safety existing at the time. That does not mean, of course, that there is no possibility of innovation, but it does mean that when there is innovation the responsibility for safety and the complete onus of satisfactory operation is on the designer and the manufacturer and to an extent the operator. I understand that your industry splits these functions amongst different organizations. With ours the only split is with the operators. Some battles go on there-the operator blames us and we blame the operator-and, of course, it is always the operator’s fault. (I am a manufacturer!)

The objective of this study is to analyse an annular slab fixed at the outer edge and supported by equally spaced columns on the inner edge. The thin plate theory is used in this analysis. The results are presented in the forms of a table and charts which show that deflexion and stress resultants decrease as the ratio of the inner radius to the outer radius increases. The number of columns, with the range of four to sixteen, has not much effect on maximum radial bending moment, but the maximum magnitudes of the other stress resultants and deflexion decrease as the column number increases. Reducing the column width increases the shearing forces and the transverse bending moment. However, the deflexion and the radial bending moment are insensitive to the variation of the column width.

The Sports Centre at Meadowbank provides a range of facilities for outdoor and indoor sports and its aim is to act as a centre for the people of Scotland, particularly those of Edinburgh.

Whilst the effect of lateral loads has been given most attention in the investigation of shear-wall-building structures, few publications deal with the effect of gravity loads. Even less attention was paid to the effect of temperature changes.

The paper presents the results of a preliminary ultimate load analysis on the baffle blocks of the Mangla Dam spillway, together with a description of the ensuing model tests. The models were manufactured from several types of reinforced plaster. The results obtained showed that the predicted failure mode did, in fact, occur. B.W. Preece, M. Kwiecinski and O.C. Zienkiewicz