This paper introduces the current status and special features of wind resistant design of tall buildings in Japan. It describes the Building Standard Law of Japan (BSLJ) and Recommendations for Loads on Buildings published by the Architectural Institute of Japan (AIJ-RLB). It also introduces details of the new version of the AIJ-RLB (to be published in March 2004). One of the most significant revisions is the introduction of wind directional factor to realize more rational and economic design of tall buildings, which was difficult in tropical-cyclone-prone regions. As a result, the combined effects of along-wind, crosswind and torsional forces become more significant for precise estimation of wind loads. These are also introduced clearly in the provisions of the AIJ-RLB. Some other relevant design issues such as wind environmental problems for pedestrians, habitability under vibrations for building occupants, design damping values, and damping devices are also discussed.
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