Civil Engineering - UPSC Civil Service Exam Questions - Discussion

Discussion Forum : UPSC Civil Service Exam Questions - Section 13 (Q.No. 24)
24.
What is the superelevation for a horizontal highway curve of radius 500 m and speed 100 kmph in mixed traffic condition ?
8.9%
6.2%
0%
1%
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
17 comments Page 1 of 2.

Dibakar said:   4 years ago
Above 300 m radius, it requires only drain out rainwater superelevation. So 1-2% superelevation enough.

Ganesh said:   5 years ago
I agree, the correct answer is 1%.

Shivam said:   5 years ago
If you solve the question as per mixed traffic condition you would get 8.9% as answer. But since here the terrain is not specified hence assuming it plain terrain max value of superelevation is capped up to 7% hence the answer is 7%.

Pravin Shankarsing Pardeshi said:   6 years ago
It's work to be 11.25% but Max super elevation for plain and Rolling terrain is 7%.

Farooque said:   6 years ago
By mistake they have given 1% instead of 7%.

Correct answer is 7%.

Tinku Meena said:   6 years ago
Max superelevation for plain terrain is 7%. So, none of the option is correct.

Lokesh said:   6 years ago
It works out to be 8.9%.

But it should not exceed 7%.
So, the answer should be 7%.

I think 500m looks almost straight road for which super elevation not required.

Pr kr said:   6 years ago
It should be 7% which the maximum value of superelevation.

Sourabh said:   7 years ago
It's option A as mixed traffic condition.

Harry said:   7 years ago
Why neglect the lateral friction 0.15?


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