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of /home/abouaayt/public_html/aboutcivil/answers/qa-plugin/user-management/layer.php what is chaining and levelling? - Civil Engineering Technical Questions Answers - Ask a Civil Engineer
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what is chaining and levelling?

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Chaining:
     It is a type of surveying in which only linear measurements are made in the field.
Levelling:
     Its a branch of surveying the object of which is to find the elevations of given lines with respect to a given or assumed datum line and to establish the points at a given elevation with respect to datum.
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