在城市市区进行建筑施工放线测量时,通常根据建筑物与道路及建筑红线之间的相对关系,来确定建筑物轴线的位置。但在新建场地上进行工程建设时,就难以寻找到参照物,设计总平面图上常常仅提供城市测量控制网的相应坐标值,并以此为据进行施工放线测量。为此,在施工放线前,应先进行 Building delineation surveys in urban areas of the city usually determine the location of the axis of the building based on the relative relationship between the building and the road and the red line of the building. However, it is difficult to find a reference object when constructing a project on a new site. Corresponding coordinate values ​​of the urban survey and control network are often only provided on the design master plan. Based on this, the construction payout measurement is performed. To this end, before the construction release, should be carried out