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The differential leveling runs from BM 10 to BM 11 at a distance of 7.5km. It was observed that the leveling rod was inclined 6º from the vertical every time the backsight is taken. The average BS reading is 3.15m and the average length per set-up is 300m. Determine the error every 300-m set-up and the correct elevation of BM 11 if the recorded elevation was 140.20m

The differential leveling runs from BM 10 to BM 11 at a distance of 7.5km. It was observed that the leveling rod was inclined 6º from the vertical every time the backsight is taken. The average BS reading is 3.15m and the average length per set-up is 300m. Determine the error every 300-m set-up and the correct elevation of BM 11 if the recorded elevation was 140.20m

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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The differential leveling runs from BM 10 to BM 11 at a distance of 7.5km. It was observed that the leveling rod was inclined 6º from the vertical every time the backsight is taken. The average BS reading is 3.15m and the average length per set-up is 300m. Determine the error every 300-m set-up and the correct elevation of BM 11 if the recorded elevation was 140.20m
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