The Structural Engineer > Archive > Volume 55 (1977) > Issues > Issue 9 > Correspondence on Discussion on Structures for the Olympic Complex in Montreal 1976 - with Emphasis
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Correspondence on Discussion on Structures for the Olympic Complex in Montreal 1976 - with Emphasis on the Design of the Velodrome and Swimming Centre Shell Structures

In The Structural Engineer for July 1977 you report the discussion on the paper 'Structures for the Olympic Complex in Montreal 1976'. The contribution by my old friend Professor Happold contains an error of historical fact which should not go uncorrected. The yield line theory was not invented by Professor Johanssen, it was discovered by Aage Ingerslev who published it in your journal in 1923. W. Smyth