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of /home/abouaayt/public_html/aboutcivil/answers/qa-plugin/user-management/layer.php What is the levling? - Civil Engineering Technical Questions Answers - Ask a Civil Engineer
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What is the levling?
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Levelling involves the measurement of vertical distance relative to a horizontal line of sight.
With help dumpy level we measure vertical distance between point A and B and this distance may be compare with reference point which is called BM (as we already know the value of BM from sea level)
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