Eduardo Torroja: Produce

“[S]tresses in one direction produce not only a deformation along this direction but also transversally, the relation of both being expressed by the so-called Poisson ratio. However, the consideration… is of no great importance for the first, approximate judgement.”

Eduardo Torroja

p, 125
Philosophy of Structures (1958)

“[E]xperimental investigation of stresses in a plane structure is of great interest and merit as applied to shells with single curvature (barrel shells, pipes) and to shells with double curvature (domes, etc.). In these structures similar states of stress are produced and can be determined at any point as acting in a plane tangential to the center layer of the shell.”

Eduardo Torroja

p, 125
Philosophy of Structures (1958)

“Equilibrium requires that the whole of the structure, the form of its elements, and the means of interconnection be so combined that at the supports there will automatically be produced passive forces or reactions that are able to balance the forces acting upon the structures, including the force of its own weight.”

Eduardo Torroja

p, 125
Philosophy of Structures (1958)

Support

“The material in all elementary parts of a structure must have the properties of resistence to all internal forces produced by general loading conditions and by the action of any exterior force.”

Eduardo Torroja

p, 125
Philosophy of Structures (1958)

Parting

“Lightweight concrete obtained with special admixtures producing bubbles throughout the mass shows lower resistance, which makes it less suitable for structural purposes; its practical application is limited to smaller structural elements adequately reinforced in which thermal insulation is required.”

Eduardo Torroja

p, 125
Philosophy of Structures (1958)