Civil Engineering - Highway Engineering - Discussion

Discussion Forum : Highway Engineering - Section 5 (Q.No. 35)
35.
Three points, A, B and C 500 m apart on a straight road have 500 m, 505 m and 510 m as their reduced levels. The road is said to have
no gradient between A and C
a positive gradient between A and C
a negative gradient between A and C
a negative gradient between A and B
a positive gradient between A and B followed by a negative gradient between B to C.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
36 comments Page 2 of 4.

Baloch said:   6 years ago
The correct answer is not mentioned.

The correct answer is, "a positive gradient between A and B followed by C".

Option B is wrong because between is only for two things.
(1)

Salik Haroon Abbasi said:   6 years ago
Yes, the Answer should be B.

Deepthi said:   6 years ago
Agree @Manigandan.

But In the question distance between A & B not mentioned. Then how can we decide it will positive?

ManiGandan said:   6 years ago
The answer is correct because, they are considering the elliptical shape of the earth, when the distance between A&B is small from A. Then it is a positive gradient, then another 500m additional means, from A, it is far enough, that the RL is low, when seeing from A, since it is a straight line. So, E is right.
(1)

Sangamesh said:   6 years ago
It is correct because the First gradient is straight then it will be zero means N1=0, then, - (-N2) =+N2, then it will be negative gradient.

Utsav said:   7 years ago
According to me, B is the correct option.

Utsav said:   7 years ago
C is the correct answer.

Staff reading is increasing. Thus its downward slope.

Ganesh CH Das said:   7 years ago
The correct answer is B.

Puspendu said:   7 years ago
According to me, Option C is right.

Mohit patial said:   7 years ago
The answer given is right.

Two gradients are there A to B, B to C.
Both have the same gradient i.e. 1 in 100.
So, when two gradients are joined, the formula for resulting gradient is, n1 - n2.
So here A to B is a positive gradient ( n1), whereas B to C is a negative gradient (-n).
(1)


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