A differential levelling was conducted from BM1 to BM2 30 km apart. BM1 is at elevation 124. 08 m. The backsight distances averages 150 m in length and the foresight distances averages 100 m. the recorded elevation of BM2 was 274.11 m. If the level used is out of adjustment such that when the bubble was centered the line of sight was inclined 0.003 m upward in distance of 100 m. What would be the corrected elevation of BM2?
A differential levelling was conducted from BM1 to BM2 30 km apart. BM1 is at elevation 124. 08 m. The backsight distances averages 150 m in length and the foresight distances averages 100 m. the recorded elevation of BM2 was 274.11 m. If the level used is out of adjustment such that when the bubble was centered the line of sight was inclined 0.003 m upward in distance of 100 m. What would be the corrected elevation of BM2?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A differential levelling was conducted from BM1 to BM2 30 km apart. BM1 is at elevation 124. 08 m. The
backsight distances averages 150 m in length and the foresight distances averages 100 m. the recorded
elevation of BM2 was 274.11 m. If the level used is out of adjustment such that when the bubble was
centered the line of sight was inclined 0.003 m upward in distance of 100 m. What would be the corrected
elevation of BM2?
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