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瑞士日内瓦新建的展览馆采用特轻屋面材料。展览馆屋面面积为45,000平米,要求屋面材料重量要轻,并有一定强度,能够承受相当厚度的积雪,还要适应某些弹性运动。根据设计要求,屋面材料的重量不能超过每平方米2公斤。目前任何屋面材料及施工方法都无法达到这一要求。展览馆最后使用聚酯增强PVC片材做屋面材料,片材厚度仅为1.2毫米,每平方米仅重1.6公斤。使用一层即可。屋顶的最外层为固定用型材,然后是增强PVC片材、
The new exhibition hall in Geneva, Switzerland uses special light roofing materials. The roof area of the exhibition hall is 45,000 square meters. The roofing materials are required to be lightweight, have a certain strength, can withstand a considerable amount of snow, and must adapt to certain elastic movements. According to design requirements, the weight of the roofing material must not exceed 2 kg per square meter. At present, any roofing materials and construction methods cannot meet this requirement. In the exhibition hall, polyester-reinforced PVC sheet was used as the roofing material. The thickness of the sheet was only 1.2 mm, and the weight was only 1.6 kg per square meter. Use one layer. The outermost layer of the roof is fixed profile, then reinforced PVC sheet,