Roof coverings such as asphalt shingles and clay tiles used on top of residential building roofs are essential components that protect the roof structure from water intrusion. They are susceptible to damage during extreme wind events because of excessive external pressures. In this study, the effect of variation in roof shape on the vulnerability of roof covering is evaluated. A data-based probabilistic damage assessment methodology is implemented by utilizing wind-tunnel data from newly conducted wind tunnel tests on irregular shaped buildings. The peak pressures on roof covering elements are evaluated and compared to the uplift resistance to determine failure. The process is repeated for different models within a Monte Carlo simulation (MCS) framework. Finally, the effect of roof shape on the expected roof covering damage is estimated. The vulnerability curves and fragility curves for different roof shapes are plotted. Although the variation is minimal between different roof shapes (L-shaped, C-shaped, and T-shaped roofs), significant variation is observed between rectangular and non-rectangular roof shapes.
