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混凝土中型空心砌块(以下简称中砌块)是墙体材料和构件采用工厂或现场预制,然后用中小型吊装机具进行装配的一种工业化建筑体系。它具有投资少,形成生产能力快,施工效率较高等优点。中型砌块建筑的造价一般比砖混结构略低。如1977年竣工的广西机械设计院三幢5层中砌块住宅,土建决算造价为49.48元/米~2,比当时的砖混结构住宅建筑低5%。
Concrete medium-sized hollow blocks (hereinafter referred to as “blocks”) are an industrial building system in which wall materials and components are prefabricated by factories or on-site, and then assembled by small and medium-sized lifting equipment. It has the advantages of less investment, rapid production capacity, and high construction efficiency. The cost of medium-sized block buildings is generally slightly lower than that of brick-concrete structures. For example, in the five-storey mid-rise block residential building of Guangxi Mechanical Design Institute completed in 1977, the cost of civil construction final account was 49.48 yuan/m2, which was 5% lower than the brick and concrete structure residential building at that time.