Fig. 1From: Using ambient vibration measurements for risk assessment at an urban scale: from numerical proof of concept to Beirut case study (Lebanon)Distribution of the mechanical parameters of the 141 building structures as a function of their fundamental period (s): a yielding displacement d y (m); b ductility ratio d u/d y. The color code corresponds to five different typology classes [taken from Lagomarsino and Giovinazzi (2006)]Back to article page