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在工业建筑施工中,会经常遇到预制钢筋混凝土柱安装在现制柱杯口内的情况。按照操作规程的要求,安装前杯口顶面要弹出十字线,柱子的四面也要弹出柱的中心线,吊装时对
In the construction of industrial buildings, it is often the case that prefabricated reinforced concrete columns are installed in the mouth of existing columns. According to the requirements of the operating rules, the crosshairs should be ejected from the top surface of the cup before installation. The center line of the column should also be ejected on all four sides of the column.