How can we use the total station to set the arc?
Total station, the total station electronic rangefinder (Electronic Total Station), is a set of optical, mechanical and electrical as one of the high-tech measuring instruments, is a set of horizontal angle and vertical angle, distance (oblique distance, horizontal distance), height measurement functions of the instrument of Surveying and mapping system. Compared with the optical theodolite optical electronic theodolite dial for photoelectric scanning disk, artificial optical micrometer readings replaced by automatic recording and displaying the measurement readings, simple operation, and can avoid the error of reading. Because it can complete all the measurements on the station at one time, it is called the total station instrument. Widely used in the field of large-scale construction and underground tunnel construction, such as precision engineering surveying or deformation monitoring field.
Now the big radius arc of building engineering usually uses two methods to set out the arc line. One is to calculate the lofting coordinates according to the interval length of the lofting, and then use the measuring instrument to point out the points in the field, and finally connect the points in a straight line. The other one is the only instrument set out several small, then according to between the arc and the chord length parameters of adjacent data points by geometric method for encryption, to ensure the accuracy of arc.
