Civil Engineering - UPSC Civil Service Exam Questions - Discussion


Consider the following statements :
1. An ascending gradient of 1 in 100 meets an ascending gradient of 1 in 120 to form a Valley curve.
2. A falling gradient of 1 in 25 meets a falling gradient of 1 in 50 to form a summit curve.
3. The length of summit curve is determined on the basis of head light sight distance.
Which one of the statements given above is/are correct ?

[A]. 1 and 2
[B]. 2 and 3
[C]. 1 and 3
[D]. 2 only

Answer: Option B


No answer description available for this question.

Shyam said: (May 30, 2015)  
Length of valley curve is determine on the basis of HSD.

Pankaj said: (Mar 24, 2017)  
Answer is only 2, option D.

Dhanu said: (Sep 19, 2017)  
Yes, the correct option is D.

Chetan said: (Jan 20, 2018)  
Second statement is false right? since those two gradients form a valley curve.

Basavaraj said: (Jul 18, 2018)  
I think Option D is correct.

Pratap said: (Sep 15, 2018)  
Headlight sight distance is criteria for valley curve.

So, statement 2 is wrong.

Sidkudas said: (Aug 22, 2019)  
All the statement are wrong, valley curve is formed when descending meet ascending gradient. , And vice versa for summit curve. And headlight sight distance is criteria for determining valley or sag curve.

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