When a traverse originates from a known position and also terminates to known position then it is called a closed traverse. (If the origin and terminating points are the same then it is called closed-loop traverse (Figure 28.2a). This type of traverse permits an internal check on the accuracy of angular measurements, provides an indication of the consistency of measuring distances as well as angles. But detection of systematic errors in linear measurement or errors in the orientation of the traverse, is not possible. This type of traverse is recommended for minor projects). A closed traverse that originates from a known point and terminates to another known point (Figure 28.2b) is the most reliable. This type of traverse henceforth called as open looped close traverse provides computational checks allowing detection of systematic errors in both distance and direction and, therefore, preferred to all other types of traverse.

<< Back