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 6 of 6.

Pawan said:   1 decade ago
Equation e + f = v2/127 R.

Thus e directly proportional to velocity and inversely proportional to radius of curvature which
is right.

So incorrect answer is option C inversely proportional to acceleration due to gravity.

TANMOY SAHA said:   1 decade ago
Superelevation(E) = Rate of superelevation(e)* Width of pavement(B).

So E directly proportional to B,
So the correct option will be 'B' .

Joce said:   1 decade ago
It is directly proportional to the velocity square and inversely proportional to the radius of curvature.

Srikanth IIITBasar said:   1 decade ago
Actually it is not directly proportional to width of pavement. Because,

Superelevation (e) = tan (tita) = sin (tita) = opp side /hyp= E/ width of pavement.

Sagar Shah said:   1 decade ago
Is it they are considering directly proportional to square of velocity?

Priya said:   1 decade ago
Directly proportional to the velocity and also inversely proportional to the radius of curvature.


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