5. Conclusions
The ongoing work on the revision of the Chapter 8 for the seismic design of timber buildings of Eurocode 8 was presented. The new proposal, which is markedly different from the previous and current short, concise and outdated version, is based on the following main modifications: (i) changes in the general definitions and design concepts, (ii) update of the list of wood based and other materials and properties of dissipative and non-dissipative zones, (iii) update of the list of structural types with consideration of new structural widely used types not included in the current version, (iv) modification of the description of the existing structural types with the aid of graphical descriptions, (v) modification of the values of the behaviour factors for the different Ductility Classes, (vi) introduction of capacity design rules for each structural type and of the over-strength factors to be used in the design of the brittle components, (vii) modification of the current equations for the safety verifications and (viii) some new provisions for the application of the non-linear static (pushover) analysis.
More research is of course needed about the applicability of the new provisions on multi-storey buildings also considering other structural systems and especially for medium to high-rise buildings in medium to high seismicity areas, where the common commercially available connection devices seem inapplicable and the seismic design requires a different philosophy or different types of connection devices.
