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Professor A. Bolton (F) (Heriot-Watt University, Edinburgh): The Code Servicing Panel has done a great deal of painstaking work on our behalf, and its members deserve our commendation. It seems to me, however, that they have been constrained to give us a formal shadow of what is really needed.
The brick diaphragm wall is a wide-cavity wall with the two leaves bonded together not by the normal cavity ties but by cross-ribs of brickwork. The leaves and cross-ribs, acting integrally, form a series of connected box or I-sections having a high section modulus and radius of gyration. This gives the wall a much greater resistance to lateral and vertical loading than the normal cavity wall. The technique enables diaphragm walls to be used for tall single-storey structures where experience and investigation have shown them to be faster, simpler, and cheaper to construct than the traditional steel frame and cladding. The paper discusses the development of the idea, its applications, the design philosophy, and future developments. W.G. Curtin
The intensity of snow loading and the provisions of CP3: Chapter V have generated a deal of interesting correspondence over the past year. Verulam