4. From one side of a river 400m. wide, a level took a foresight to the other bank with a reading of 4.024. If the height of the instrument is 1.5m. and the elevation of the stations occupied is 200m. find the elevation of the point sighted on the other bank considering the curvature and refraction correction. a) 197.4867 b) 199.2448 c) 196.3662 d) 198.3364

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Question
4. From one side of a river 400m. wide, a level took a foresight to the other bank
with a reading of 4.024. If the height of the instrument is 1.5m. and the elevation
of the stations occupied is 200m. find the elevation of the point sighted on the
other bank considering the curvature and refraction correction.
a) 197.4867
b) 199.2448
c) 196.3662
d) 198.3364
Transcribed Image Text:4. From one side of a river 400m. wide, a level took a foresight to the other bank with a reading of 4.024. If the height of the instrument is 1.5m. and the elevation of the stations occupied is 200m. find the elevation of the point sighted on the other bank considering the curvature and refraction correction. a) 197.4867 b) 199.2448 c) 196.3662 d) 198.3364
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