1958年“大跃进”中,由于当时有些部门推行“因陋就简”、“土洋结合”快速建厂的方针,成都地区的两个机械制造厂在这个方针指导下,曾修建了一批低标准的大型单层工业厂房,总建筑面积达20多万m~2。建成后,由于存在设计标准过低和施工质量差等问题,致使厂房不仅不能满足生产要求,并且还有安全问题故迟迟不能投产。六十年代初在处理这批厂房时,其中除小部分因生产急需予以拆除重建外,大部分作为辅助性生产厂房降级使用。但长期来一直在探索使这批厂房通过改造而使之能实用的途径。这批厂房的主要问题是屋盖部分,当时设计采 In the “Great Leap Forward” of 1958, as some departments at that time implemented the principle of “building factories due to simplicity” and “combination of soil and foreign materials”, two machinery manufacturers in the Chengdu area under the guidance of this directive had built a number of low standards. Large-scale single-story industrial plant, with a total construction area of ​​more than 200,000 m2. After the completion of the project, due to problems such as the low design standards and poor construction quality, the factory buildings not only failed to meet the production requirements, but also had safety problems and could not be put into production. In the early 1960s, when these factories were being processed, a small portion of them were demolished and rebuilt for the urgent need of production, and most of them were used as auxiliary production plants for degraded use. However, for a long time, we have been exploring ways to make this batch of factory buildings practicable through transformation. The main problem in this batch of plants was the roof part.