Abstract
A generalized formulation of the FAST vulnerability method for Reinforced
Concrete Moment Resisting Frame (RC-MRF) buildings with irregular
distribution of infills in elevation is presented. This method, which belongs to the
wider family of spectral-based methodologies for the simplified assessment of
infilled RC MRF buildings, has been already proposed for uniformly infilled
frames and applied in the case of post-earthquake damage survey results for
benchmarking purposes. The generalized approach allows to consider a reduction
of the amount of infills at the ground floor. Thus, this new form of FAST is
capable of computing all intermediate situations between the uniformly infilled
and pilotis (no infills at ground storey) cases. Finally, the approach provided is
applied to the case of Lorca (Spain) 2011 earthquake damage survey data.
