Seismic Assessment of Timber Diaphragms According to the New Draft of EN1998-3

The paper reports on the procedure for the seismic assessment of timber diaphragms that has been introduced in the new draft of EN1998-3. The procedure covers the knowledge gap that is currently existing in the European standards and that is of special relevance in earthquake-prone countries such as Italy. The critical analysis of the new provisions is preceded by a brief summary on the standard background, with reference to the highest recognized codes in the field at the international level. Casestudy buildings are then selected and analysed to better illustrate the various steps of the procedure and to assess the impact of the new provisions when applied to real scenarios.