The paper presents a numerical technique for solving two-point boundary beam problems. The method of analysis consists of utilizing the method of superposition in conjunction with accurate expressions for boundary-value derivatives and a double integration formula. The method particularly lends itself to the analysis of statically indeterminate beams, with non-uniform bending stiffness under transverse loading. T.J. Kotas
The paper presents a new approach to the analysis of bridge decks having a cellular transverse cross-section. It uses a modified finite element technique and solutions are obtained by fully-automatic computer program. Only the major stress-carrying modes are represented and a considerable saving in the number of simultaneous equations to be solved is achieved. The degree of accuracy obtained is assessed by comparisons with empirical values and the programs are used to investigate the effect of distortional stiffness on stresses. Professor F. Sawko and R.J. Cope
Improved compaction, improved adhesion of cement matrix to aggregate particles and application of triaxial stress are seen as the main methods of improving concrete compressive strength. A.J. Harris
The rebuilding of the Stock Exchange in London presents an interesting problem in design and in construction. The need was to produce a building of the highest possible standard architecturally which would not only satisfy the complex requirements of the Stock Exchange as a market but which would also be compatible with the contemporary City scene. At the same time the work had to be carried out without disrupting the operation of the Stock Exchange, and without risking damage to the Central Line tubes which run close alongside the site. This paper describes the first stage of the rebuilding and in particular the special construction of the foundations and also the loadbearing precast concrete exterior of the 27-storey-high tower which determines its architectural character. Peter Dunican and John Martin
Details of the Institution’s Structural Engineering Technician Certifcate Scheme have now been published and advised to all colleges in the United Kingdom that offer courses of preparation for the specified academic qualifications. All chartered structural engineers and others responsible for the training of design office personnel should familiarise themselves with the scheme in order that they may advise and guide those whose qualifications and responsibilities can lead to the award of the Institution’s Structural Engineering Technician Certificate.