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The Structural Engineer

In the field of structural engineering the last two decades have been marked by a rapid expansion in the use of shell concrete. Although the analysis of this type of structure has been subject to many theoretical investigations the actual design method has advanced little. Most of the developments in the design methods have been in adding refinements to the mathematical theory of elasticity of shells; the calculations for the design of barrel vault roofs have remained tedious and arithmetically cumbersome. H. Tottenham