In the process of building of cable-stayed bridges the special attention is paid to location surveys, at that the errors of components coordinates of the raising structure are a combination of location survey errors and coordinates errors of geodetic control network (GRO). In the context of construction works the marks of GRO are the original plan and altitude basis, and at that several marks turn out to be not enough stable neither of plan nor of altitude, so seasonal checks (spring and autumn) are carried out with following station adjustment. It is necessary that errors of geodesic points location have the minimum influence on location surveys. The article provides a combinational approach for monitoring of plan location (trilateration and triangulation) ans altitude (geometrical and trigonometrical) level control. Based on the results of station adjustment the assessment of accuracy of coordinates and altitudes of GRO points.
geodetic control network, adjustment, estimation of accuracy of measuring results, trilateration, triangulation, geometrical and trigonometrical level control
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