《建筑物防雷设计规范》GB50057-94是在《建筑防雷设计规范》GBJ57-83的基础上修订而成的,经建设部批准为强制性国家标准,自1994年11月1日起施行。包括建筑物的防雷分类、建筑物的防雷措施、防雷装置、接闪器的选择和布置、建筑物年预计雷击次数、建筑物易受雷击的部位、接地装置 “Building Lightning Protection Design Code” GB50057-94 is revised in the “Building Lightning Protection Design Code” GBJ57-83 based on the revised, approved by the Ministry of Construction as a mandatory national standard, effective November 1, 1994 . Including lightning protection classification of buildings, lightning protection measures of buildings, lightning protection devices, selection and arrangement of lightning receptors, number of expected lightning strikes in buildings, lightning susceptibility to buildings, grounding devices