ACCURACY OF DETERMINATION OF THE MARKING NETWORK COORDINATES
External geodetic network is created on the construction site for rendering in nature the main or center marking axis of buildings (structures), fixing their design parameters, implementation of detailed layout works and executive surveys.The possibility of using the electronic total stations Sokkia 610 and 3Та5Р for determination of the planned position of geodetic points of the external marking net on the building site is being studied. For that theoretical accuracy of determination of geodetic points’ coordinates is being compared. The accuracy is calculated on the basis of the nameplate data of the instruments and real values of mean squared errors of the coordinates’ determination by these devices by the polar method on the construction site.