Loss Analysis for Wood Frame Buildings during Hurricanes. II: Loss Estimation: Fid-Bau Portal

Loss Analysis for Wood Frame Buildings during Hurricanes. II: Loss Estimation

van de Lindt, John W. / Nguyen Dao, Thang

Abstract

This is the second paper in a set of companion papers. The first paper focused on modeling the hurricane hazard and the methodology to compute the volume of rainwater entering a roof system during a hurricane. This second paper explains a methodology to probabilistically compute losses beginning with the type and location of damage and volume and location of rainwater intrusion into the roof system. The ability to identify each contribution to damage and monetary loss is a necessary condition for development of performance-based wind engineering, thus providing the impetus for this second paper. The methodology summarized in this paper is capable of tracking damage and the individual damageable component contributions to the total loss probability. An illustrative example that compares losses for the same light-frame wood residential structure introduced in the first paper is presented. In addition, both damage and loss probability distributions are presented for each room in the structure, as well as for each damageable component. The results are felt to be reasonable and align qualitatively with logic considering the size of the hurricanes and geographical location of the structure. The approach has applicability in design code refinement and development, sensitivity studies for improved building products, and land use and planning investigations.