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西德卡塞耳市综合工学院的结构试验研究所,提出了一种新式屋顶设计方案。主要内容是,在一般平屋顶上覆盖土层,以便种植各种青草。设计者认为,这种屋顶有很多好处:可以保证空气清新;可以
The Structural Test Institute of the Kassel City Institute of Technology in West Germany proposed a new roof design scheme. The main content is to cover the common flat roof with a variety of green grass. Designers believe that this kind of roof has many advantages: it can guarantee that the air is fresh;