Fig. 6: Derivation process of building vulnerability.
From: Can we develop a more targeted approach to mitigating seismic risk?
a The construction period distribution of surveyed individual buildings in the downtown area of Taiyuan city. b The ratio of surveyed buildings classified by construction periods and storey classes. c The ratio of surveyed buildings classified by construction periods and structure types. It is worth noting that the dividing threshold of each period (namely 1957, 1977, 1990 and 2001) corresponds to the issue year of the first, second, third, and fourth national seismic zonation map in China, which defines the seismic design code for new buildings built afterwards. d–f The median fragility curves derived by Xin et al. 58 for brick-wood, mixed masonry, and steel-RC building types, respectively.
