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The Structural Engineer, Volume 65, Issue 10, 1987
Bending moments in brickwork panels Mr A. Aiken's letter, published in July, has prompted several replies. Mr J. E. Saul writes to us from Mold, Clwyd: Mr Aiken's problem is that he has not realised that brick panel design in BS5628: Part l is based on plastic principles. Well mostly, that is panel analysis is, but section analysis is not that is elastic. Anyone could be excused for making this mistake since, apart from being confusing, it is also well wrapped up by the Code writers. Verulam
Mr Liddell: There was really only one suitable fabric for the roses - teflon-coated glass fabric cloth-but, for a variety of reasons, alternatives were considered during the design stages, the main reason being that Frei Otto distrusted the material because of a disastrous experience at Cologne in 1957 with glass fibre cloth coated with PVC. Glass fibres do not degrade in sunlight in the way that organic fibres do, but they are weakened by water and are brittle and hence can suffer mechanical damage.
A form of limited continuous construction: suitable for use in multistorey buildings designed as non-sway frames, is described. The method employs a two-way grid of beam and continuous tibs sitting on double spine beam which pass on each side of the columns. Fabrication and erection are thereby simplified. A number of design issues raised by the use of continuous composite beam, continuous beam restrained by roof decking and columns subject to biaxial bending are discussed in the light of both current Codes of Practice and recent research. P.R. Brett, D.A. Nethercott and G.W. Owens