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The Structural Engineer, Volume 43, Issue 4, 1965
Opening the discussion, the President asked if Mr. Evans could say something further regarding costs. For example, what was the approximate cost per seat of all the seats under the canopy?
A technique is presented of reaching the critical load of frames with redundant members in a systematic manner which reduces the amount of arithmetic needed in repeated trial and error methods. A very simple redundant truss is given as an example, but the method has been applied to more complicated frames with several redundants. Arthur Bolton
The paper describes large deflexions found in electrically floor heated reinforced concrete slabs in a considerable number of Scottish flats and gives the basic reasons why such deflexions occur. It goes on to describe a number of laboratory tests to ascertain the shrinkage of the aggregates used for constructing the floors and the influence on concrete made with such aggregates and similar sands. The results of E tests are given. An investigation into the temperature and deflexion characteristics with or without live load of a typical flat is described and the results are given, together with examples of deflexion readings from other flats and core crushing results. R.A. Sefton Jenkins, J.M. Plowman and B.A. Haseltine