Abstract
Expected building damage is proposed as a measure of building performance against structural collapse. The proposed novel concept is illustrated with a case study of a typical steel framed building subjected to a bomb explosion and the resulting column removal. Stratified approach to systematic sampling was used to assign appropriate weights to sampled damage scenarios. Finally, an overall expected building damage resulting from randomly located explosions was analytically derived. The analytical expected damage gives a mean building failure as a function of the explosion reach. The presented expected damage is a scalar performance measure and thus it lends itself to a comparison of alternative designs. Expected damage function is a collapse signature of a given building that takes into account copiousness of explosion locations and feasible detonation magnitudes. Copyright © ASCE 2011.