The number of the seismic isolated high-rise building has been gradually increasing in Japan. However, the full-scale researches
about the wind-induced response of seismic isolated high-rise building are not sufficient. The wind resistant design of the building is
done so that the primary members become the elastic-region even if the strong wind forces are acted. Thus far a long-term monitoring
to wind velocity and response of 20-story seismic isolated high-rise building with an elongated section has been executed. This paper
discusses the characteristics of wind-induced response for this seismic isolated high-rise building using the monitoring records. Main
focus of this paper is torsional components of response. Measured data show torsional response affects evaluation of habitability