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Mr. H. G. Cole: We, in the corrosion field, have been saying for some time that what is wanted is not more research into corrosion mechanisms, but more application of existing knowledge.
The ways in which pneumatic structures differ fundamentally from conventional metal structures are briefly explored, with particular reference to strength, stiffness, stability and safety. The non-linear properties of fabrics or films are discussed, and some attention is given to collapse behaviour, due either to wind pressure or loss of
internal pressure. In presenting the results of analysis and research fundamental equations that can be readily used as a basis for design calculations are employed.
The paper outlines a possible approach to the problem of assessing the proneness to structural accidents of a given structure or class of structures. It seeks to distil from experience of past structural failures a number of significant parameters, by the assessment of which for a new structure its proneness to accidents could be broadly judged. A way of displaying and comparing such assessments, as by more than one engineer, is indicated.
Sir Alfred Pugsley