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一、概况采用大型壁板,有利于改善劳动条件,节省工时,缩短工期,提高质量,降低成本,促进生产预制化,建筑装配化和吊装机械化。国外从60年代开始到现在,大型壁板发展日益增长。据统计,波兰在全部建筑中,1967年为18％,1971年为29％,预计1975年将达60％,展望1980年可扩大到83％。苏联1959年为1.7％;1967年为33％;1971～1975年将发展到50％。1967年德意志民主共和国已达36.2％;1968年法国为25％。而在
I. Overview The use of large-scale siding is conducive to improving working conditions, saving man-hours, shortening construction period, improving quality, reducing costs, and promoting the production of prefabrication, building assembly and hoisting mechanization. From the 60’s until now, the development of large-scale siding has been growing. According to statistics, in all buildings in Poland, 18% in 1967 and 29% in 1971, it is expected that it will reach 60% in 1975, and it is expected to expand to 83% in 1980. The Soviet Union accounted for 1.7% in 1959; in 1967, it was 33%; and from 1971 to 1975 it would grow to 50%. In 1967, the German Democratic Republic had reached 36.2%; in 1968, France was 25%. In the