7-) A level of circuit is run a total distance of 9 km from BM30 to set three other benchmarks in the vicinity of a construction project. The given elevation of BM30 is 112.78 meters. When closing the level loop, its elevation is observed to be 112.68 m. What is the accuracy of the survey? Adjust the benchmark elevations.

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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7-) A level of circuit is run a total distance of 9 km from BM30 to set three other benchmarks in the vicinity of a construction project. The given elevation of BM30 is 112.78
meters. When closing the level loop, its elevation is observed to be 112.68 m. What is the accuracy of the survey? Adjust the benchmark elevations.
ONSO A
Observeed Elev:142.50m
BM30
Elev. 112.78m
2.65 km
3.40km
BN30 B
Observed Elev:99.80 m
2.05 km
BN30 C
Observed Elev: 120.24m
Transcribed Image Text:7-) A level of circuit is run a total distance of 9 km from BM30 to set three other benchmarks in the vicinity of a construction project. The given elevation of BM30 is 112.78 meters. When closing the level loop, its elevation is observed to be 112.68 m. What is the accuracy of the survey? Adjust the benchmark elevations. ONSO A Observeed Elev:142.50m BM30 Elev. 112.78m 2.65 km 3.40km BN30 B Observed Elev:99.80 m 2.05 km BN30 C Observed Elev: 120.24m
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