The evaluation of 3D traverses of three different distance lengths toward the quality of the network for Deformation Survey

3D traverse network survey is one of the methods use by surveyor or engineer as a control network for deformation monitoring, as not all the area/position surrounding the building or high rise building suitable for GPS observation and that position unavoidablely required for monitoring of the building. Generally, this Deformation Surveys can be able to detect relative even absolute movements for monitoring of a pump base, storage tanks, retaining walls, slope areas and general ground subsidence. According to this investigation, there are errors that need to be evaluated in this observation because of the data from the length lines observed, equipment used or the condition of the study area could produce some errors. Therefore, 3D traverse network is performed using a high accuracy Topcon Total Station (ES 105) with 1 second angular and 2 mm distance accuracy to evaluate the impact of distance of each traverse line toward the quality of the closed 3D traverse. Hence, this 3D traversing is expected to generate the statistical summary test after a proper processing in the Microsurvey StarNet software systems. In the StarNet system, the quality of 3D traverse will be evaluated based on the chi-square level achievement produced after the data has been processed in the systems. Then, the result of Chi-Square Test (Total Error Factor) from the adjustment must be in the middle within Upper and Lower Bounds for the data being process to passes the adjustment. Obviously, this adjustment result may be producing the output and the quality can be evaluated.