Civil Engineering - Highway Engineering - Discussion

Discussion Forum : Highway Engineering - Section 1 (Q.No. 12)
12.
Pick up the incorrect statement from the following. The super-elevation on roads is
directly proportional to width of pavement
directly proportional to velocity of vehicles
inversely proportional to acceleration due to gravity
inversely proportional to the radius of curvature.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
56 comments Page 5 of 6.

Pratibha Nishad said:   7 years ago
Directly proportional to the velocity and also inversely proportional to the radius of curvature.
(1)

ANJAN said:   6 years ago
e+f = (0.278V)'2/9.8R.

So, option A is correct.

Pari.. said:   6 years ago
Super elevation is inversely proportional to the radius.

E!=e B where e is the super-elevation.

JP Mahanta said:   6 years ago
Super elevation doesn't depends on road width, The E value (height of outer edge of road at super-elevation) depends upon e (rate of super-elevation).

Benjifanai said:   5 years ago
Guys. Question is actually trick you. B is Right.
E=eB.
e=v*v/gR.

SO,
E=v*v*B/gR.

From the final equation.
E directly proportion to width, the square of the velocity and, inversely proportional to the g and R.

here, superelevation does not directly proportional to the velocity of vehicles, but the only square of the velocity.

SO, answer B IS RIGHT.

Anomie said:   5 years ago
e=v^2/Rg so directly proportional to the square of thè velocity.

Shiw Sanku shaw said:   5 years ago
How?

M ishfaq said:   5 years ago
It is directly proportionel to quare of velocity not directly proportionl to single velocity.
(6)

Dr. ANUJ said:   4 years ago
For the total amount of superelevation, A, C, and D are correct.

So, incorrect can only be B as it is proportional to the square of the speed and not the speed only.
(1)

Khelan banjare said:   4 years ago
B is the right option.

Agree @Anuj statement.
(1)


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