Ecole Polytechnique Fédérale de Lausanne, Switzerland
The masonry chapter of the new Eurocode 8 Part 1 contains several novelties. Among these is the differentiation between unreinforced masonry typologies with regard to drift capacities and therefore qD-factors. Drift capacity models for masonry walls are empirical models obtained from experimental data. This paper summarises some of the reflections that went into the drift capacity models developed for Eurocode 8 Part 1. In particular it discusses the effect of wall size on the drift capacity and various approaches for eliminating this effect in the drift capacity model, various forms of drift capacity models and their advantages and disadvantages, as well as considerations that went into translating drift capacity models into qD-factors for unreinforced masonry buildings.