1 问题提出和防雷分级 近年来,随着我国国民经济的飞速发展,人民生活水平的不断提高,在我们的城市内外,许许多多外型新颖别致,面积大,功能全,周围环境优美的小康型住宅小区正拔地而起。与20世纪七八十年代建造的平屋顶盒式住宅楼不同,目前,绝大部分房地产开发公司开发的、并深受用户欢迎的小康多层住宅楼,屋顶往往建有供顶层住户使用的局部坡屋顶阁楼及被 1 Problem Proposal and Classification of Lightning Protection In recent years, with the rapid development of China’s national economy and the continuous improvement of people’s living standards, many and many new exteriors have been found in our cities. The well-off residential community is rising. Different from the flat-roofed residential buildings built in the 1970s and 1980s, at present, most well-off multi-story residential buildings developed by real estate development companies and welcomed by users are often built with rooftops for top-level tenants. Pent roof loft and be