This paper presents numerical study analysis and the results of confined
masonry walls. The studied parameters were number of bays, number of
stories, and openings of walls. It was showed that the window opening could
reduce the lateral capacity of the solid by ranges of 7-27% for one bay wall,
6-30% for two bay walls, and 11-26% for three bays wall. The door opening
could reduce the solid wall capacity by ranges of 11-42% for one bay wall,
13-49% for two bay walls, and 23-44% for three bays wall. This paper
presents the most significant contributions in the field of vulnerability
assessment. It is shown that methodology is very useful for assessing the
seismic vulnerability of confined masonry structures for estimating the cyclic
load induced economic losses based on an engineering demand parameter
closely related to structural damage.