Civil Engineering - Surveying - Discussion


The combined effect of curvature and refraction over a distance L kilometres is

[A]. 67.2 L2 mm
[B]. 76.3 L2 mm
[C]. 64.5 L2 mm
[D]. none of these.

Answer: Option A


No answer description available for this question.

Sumeet Kulkarni said: (Dec 8, 2017)  
Curvature correction = 0.0785D^2.
Refraction correction= 0.0785D^2รท7 = 0.0112D^2.
Combined correction = (0.0785-0.0112)D^2 =0.0672D^2.

Kalpesh Peshavariya said: (Jun 16, 2018)  
Thank you @Sumeet Kulkarni.

Dheeraj said: (Feb 13, 2020)  
@Sumit Kulkarni.

First, correct your calculations. (.0785-.0112=0.673).

Not (.0672).

And correct answer is, None of these, option D.

Xiyonee said: (Jul 18, 2020)  
That's not 0.673, It is 0.0673.

Shubash Sah said: (Dec 22, 2021)  
0.673d^2 where d is in km.

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