Effect of Flow-Rise Building Geometry on Tornado-Induced Loads

Despite the destructive effects of tornadoes, limited attempts have been made to quantify tornado-induced loading. The purpose of the study presented here was to investigate the effect of different building geometry on the forces and pressures that low-rise buildings would experience in a simulated tornado with a swirl ratio comparable to what has been measured and recorded for full-scale tornadoes. Measured force and pressure data were then used to judge whether tornado-resistant design for residential structures is feasible. The tornado-induced wind loads were measured on scaled models of buildings in a laboratory-simulated tornado with a core diameter (56 m) and relatively high swirl ratio (2.6) representing an EF3 tornado.  

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