New Seismic Design Provisions in the Swiss Structural Masonry Code

Abstract eng:
In 2003, the Swiss Society of Engineers and Architects (SIA) introduced a set of new structural design codes including the masonry code SIA 266:2003. After a decade in service, this set of structural codes underwent a revision. A new, revised version of the masonry structural code was published in July 2015. The revision had two main objectives. Firstly, the provisions introduced by SIA 266:2003 had to be updated and made more user-friendly. Secondly, the new code had to be compatible with its companion codes SIA 260 to 267 as well as with Eurocode 6 (EN 1996), Design of Masonry Structures, though considering specific national requirements. Major changes introduced during revision concerned the seismic design of masonry shear walls. The design philosophy has been modified towards the performance-based design. In addition to the established force-based seismic design, deformation-based design has been introduced in the code, though with some limitations regarding the level of the vertical load acting on the walls. Overall, the new code permits a better utilization of the potential offered by structural masonry.

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