chitectural complex has been put forward. 10.The requirement for checking calculation of crosswind direction wind excitation is added for the flexible structures The present code may be in need of local revised in the future,that the concered information and contents of local revised clauses will be published on the magazine of"Engineering Construction Standardization" Clauses marked with boldface letters in the code are mandatory clauses and must be enforced strictly. In order to enhance the quality of code,all relevant units are kindly requested to sum up and ac cumulate their experiences in actual practices during the processfor implementing this coe,that the relevant opinions and advices,which may be available for reference to next revision,can be posted to the China Academy of Building Research(Postcode:100013;No.30,Bei San Huan Dong Lu,Bei- jing,China). Chief Editorial Unit:China Academy of Building Research Participating Units:Tongii University,China Architecture Design and Research Group,China In- temational Engineering Institute for Light Industry,China Institute of Building Standard Design and Research,Beijing Institute of Architectural Design and China Academy of Meteorological Sciences. Chief Drafting Staffs:Chen Jifa Hu Dexin Jin Xinyang Zhang Xiangting Gu Zicong Wei Caiang Cai Yiyan Guan Guixue Xue Heng Reviser (English edition of code): Chen Dingwai Profr,China Academy of Building ResearchOct4 Beijing,China