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A brief outline of the basic-Bessemer converter process is given to illustrate the close connection between plant and structure in a modern steelworks of this kind. Special features of the foundations and building, such as the shape and construction of the roof, crane girders, platform block and telpher system are described, followed by notes on the use made of welding and high-strength pre-stressed bolts and the method of gantry rail fixing. An account of the erection sequence and anti-corrosion treatment is also given.
J. W. P. Jaffé
THE normal method for determining the collapse load for a framed structure involves the assumption of several collapse modes and the calculation of the appropriate load system. For highly redundant structures, this procedure can be extremely time consuming in spite of the use of various theorems which have been derived. This paper describes a non-linear circuit element which reproduces the buckling or yielding behaviour of structural members. These elements may then be connected into networks
representing framed structures and their behaviour under load studied.
N. L. Svensson
Mr. SNOW in his brief introduction of the paper referred to the sudden death of Sir Alfred LeMaitre who deserved the credit for the inspiration of Gatwick and who guided the project through the initial teething trouble; to the support given by the Minister of Transport and Civil Aviation, Mr. Harold Watkinson and to the excellent team spirit which was built up and made the job such a happy one. Mr. FINN then described and illustrated some of the works involved at Gatwick.