Section 4: Soil and Water Conservation Engineering
Surveying and Levelling
Subtopic: Types of levelling
Question Statement:
The underside beam of a railway bridge, a permanent Bench Mark with RL 85.168 m, is used for a leveling operation. The Back Sight (staff held inverted against the BM) = 3.645 m. For a Fore Sight of 1.523 m at a construction-site point, find its RL (m).
Official Answer Key:
80 to 80
Step-by-Step Solution & Explanation
Section 5: Irrigation and Drainage Engineering
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