测量时在没有经纬仪的情况下,建筑物的方角放线经常依据“勾三股四弦五”原理进行,但用这种方法比较麻烦,需多次反复,浪费很多时间。我单位采用对角线的定长进行方角放线,速度快而且精度高。具体作法是:根据建筑物的长宽尺寸,计算出对角线的长度。此三数值作为直角三角形的三个边。例如:某建筑物长30米、宽15米,求出其矩形对 When there are no theodolites in the measurement, the square corners of the buildings are often based on the principle of “three strands, four strings, five strands, and five hooks”. However, this method is more troublesome, requiring repeated iterations and wasting a lot of time. Our unit adopts the diagonal fixed length to carry out the square angle, which is fast and accurate. The specific approach is: According to the length and width of the building, calculate the length of the diagonal. This triple value serves as the three sides of a right triangle. For example: A building is 30 meters long and 15 meters wide, and finds its rectangular pair