A surveyor completed a closed traverse around four survey marks, starting at station 1 and finishing at station 4. The bearings they observed around the traverse are shown on the diagram below. Ensure you complete appropriate checks. 1 24°41'33" • Line 2-3: • Line 3-4: 2 • Line 4-1: SET 62°04'38" The surveyor observed an anti-clockwise closing angle at station 4 of 184°08′44". Calculate the angular misclose: Is it appropriate to adjust this angular misclose? How many angles/bearings will be adjusted? What is the correction value to be applied to each angle? The final adjusted bearings are: • Line 1-2: 104°24'29" 1 246°13'38" + Activate Windows

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Control Survey and Geodetic reductions

Control surveys or survey controls are used to establish reference points as a basis for various construction activities. Vertical and horizontal control points are to be established in a control survey to increase accuracy. After establishing the control points, all other types of surveys such as topographic, right-of-way, aerial mapping, construction layout, boundary surveys, and utility mapping can be worked upon so that control networks can be formed. The place from which the observations are made is called a survey station.