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随着厂房结构安装的完成,厂房周围的附属建筑也要破土动工,厂房矩形网的多数标桩不易保存,有些指标桩之间也不能通视了。这时用矩形网来放样厂内建筑物中心线已不方便了,应将矩形网距离指标桩及时的转移到柱子侧面,并用红漆标出行列线位置,组成厂房内控制网,简称内控制。内控制主要是为设备基础施工、设备安装、吊车轨道的安装与厂内附属建、构筑物的建设提供行、列线(纵、横座标),并且为生产过程中厂房
With the completion of the installation of the plant structure, the auxiliary buildings around the plant will also break ground. The majority of the piles of the factory’s rectangular nets will not be easy to preserve, and some of the indicators may not be accessible. At this time, it is inconvenient to use a rectangular net to loft the centerline of the factory building. The rectangular net should be transferred to the side of the pillar in time from the index pile, and the position of the queue line should be marked with red paint to form the control network within the factory, referred to as internal control for short. . The internal control is mainly to provide line and column lines (vertical and horizontal coordinates) for equipment foundation construction, equipment installation, installation of crane rails, and construction of auxiliary structures inside the factory, and construction of structures.