The value of the partial factor for prestress to be considered is a source of disagreement between experts in different countries. Furthermore, the article investigates the effect of the partial factor for prestress (1.0 or 1.35), there prestress contributes to the stiffness in the non-lineair structural behaviour of membrane structures. If a partial factor for the prestress 1.0 could be considered, the weight reduction would be 4% more. For the considered steel cable net structure a weight saving of 17% for a partial factor for prestress 1.35 is obtained. Generally speaking, a reduction in the cross-section areas is observed using Eurocode 3. In spite of the lack of design guidelines and calculation tools 58 years ago, the analysis according to the current design standard Eurocode 3 for steel shows that the results match quite well with the original calculation. A cable net structure built in 1958, was used as a case study. Eurocode specifies a value of 1.35 for the partial factor for prestress. ![]() This article tries gaining insight in the effect of the partial factor starting by the analysis of a steel cable net structure according to Eurocode 3.
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