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The structural use of brick diaphragm walls has been developed by the practice of W. G. Curtin & Partners for single-storey buildings of substantial height. Several buildings have been constructed using this technique during the last I5 years. Some 3 years ago, a programme of research was started at the University of Liverpool to substantiate the design assumptions used and to explore the further potential of this type of construction. This paper summarises the results of this research and confirms the suitability of diaphragm walling for single-storey construction. W.G. Curtin and F. Sawko
A method is given for the minimum cost design of rigidly jointed, multistorey steel sway frames in which economic and some architectural requirements determine their final shape. Appropriate ‘differential’ deflection constraints are imposed to control the sway in each storey. The object is to minimise the total cost of the constnrction, including material and any other handling costs. The latter is expressed as a Tied charge ’ to penalise a member retained in the final topology. The problem turns out to be that of non-linear, mixed variable integer programming. Suggestions are made to simplifr the mathematical approach, and examples are given to demonstrate the flexibility of the method. K.I. Majid, P. Stojanovski and M. P. Saka