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The Structural Engineer

SIR,-In Volume 16 in the discussion on the paper. “Moments in Flat Slabs,” a written contribution from Mr. Montgomery Smith is quoted the points of which I should like to deal with in order:

The Structural Engineer

When I was installed as President last June by my predecessor, Professor Husband, I expressed my gratification at the honour the Institution had conferred on me, and I take this opportunity of again stating fhat I do feel highly honoured at being elected to the highest appointment the Institution can confer. Lt.-Colonel H.S. Rogers

The Structural Engineer

The CHAIRMAN expressed regret that, Sir Alexander Gibb, G.B.E., C.B., F.R.S., President of the Institute of Welding, and MR. A. Ramsay Moon, Secretary of the Institute, were unable to be present owing to illness.

The Structural Engineer

Mr. GOWER B. R. PIMM, M.Inst.C.E., M.I.Struct.E., proposing a vote of thanks to Mr. Hiley for the paper, said that the pleasure of so doing was all the greater because he was privileged to be associated with Mr. Hiley on the Institution's Panel dealing with piling. The Hiley piling formula was well known, and the profession owed a debt of gratitude to Mr. Hiley for his work in connection with piling.

The Structural Engineer

THE object of this paper is to introduce to members a subject the study of which in normal practice can only by its nature, occur most infrequently. The author was fortunate to be working in the office of Mr. T. S. Tait, F.R.I.B.A., of Sir John Burnett, Tait and Lorne, to whom was entrusted the layout of the site and the design of many of the buildings in the great 1938 Empire Exhibition at Bellahouston Park, Glasgow. With t,he closing of this display a number of years will elapse before anything of the same scale is again promoted in the British Isles, and it seemed to be an appropriate moment at which to survey the development and tendencies of the design and construction in this somewhat special side of building engineering. “Design” being used in the architectural sense-possibly planning might be the engineer’s expression, or perhaps, too truly, just “ trimmings.” Exhibition construction covers a very wide field, extending over every type of structure from simple little kiosks-which may be attractive pieces of design or blots on the landscape-to the most complicated structures embodied in great town planning schemes. To confine within the limits of one paper such a multiplicity of types is impossible and it is not proposed here to consider permanent halls, such as Olympia and Earl’s Court, nor the fine buildings such as Paris constructs with foresight for its expositions and retains afterwards as permanent assets. Examples of these can be seen in the Grand and Petit Palais from the 1900, or the Trocadero and the three MusBe’s from 1937. Exhibitions are of course, primarily put up to be visited-and to make money. To be visited they must be attractive, and must therefore please and interest their visitors. This is evidently simple-all that has to be done is to have someone of second sight to say in advance. what the millions of differing peaple will want! What is eventually put up depends on circumstances and might be expressd as the products of the exhibitor's enthusiasm multiplied by the designer's delight halved by the allowable costs. Actually the matter of external appearance seems to come down finally to a choice between producing in the temporary buildings by fakework the illusion of being some other previously existing place, or designing the temporary buildings to reflect an external expression of the current development in design. The problems of appearance are for the designer, the problems of construction for the engineer. Very frequently the designer has practically fixed the construction also and it is only in the details that the engineer can apply his knowledge. D. Bethune-Williams

The Structural Engineer

THE experimental and theoretical investigations on bolted and riveted connections carried out in the Department of Civil Engineering of the University of Birmingham for the Steel Structures Research Committee are fully described in the Reports of that Committee.(l) The main purpose of the present paper is to describe certain investigations on connections encased in concrete which have been made since these Reports were published. Before doing this, however, it is desirable to review briefly some of the conclusions previously reached. Professor C. Batho

The Structural Engineer

THE average man would probably say tha ta road is not a structure, but indeed it is a very complex one. In all forms of structural engineering where the engineer is concerned to overcome the forces of nature, his problem commences at the bottom, whether the structure is a bridge, a road, or a skyscraper. The security and permanence of his foundations control the life of the structure, and in no form of engineering is this truer than in the building of a highway. H.E. Brooke-Bradley