Civil Engineering - Surveying - Discussion

Discussion Forum : Surveying - Section 1 (Q.No. 3)
3.
An ideal vertical curve to join two gradients, is
circular
parabolic
elliptical
hyperbolic
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
45 comments Page 2 of 5.

G.mahesh said:   1 decade ago
If the vertical curve is negative what is curve?

Shubham choursiya said:   1 decade ago
Use the parabolic curve (or second degree curve) in vertical curve, because the rate of change of curve of parabola is constant.

Shalini said:   1 decade ago
What is curve?

Swapnil rathod said:   1 decade ago
Ideal vertical curve join the two gradient and safe to move any vehicle and angle of inclination.

Abhishek said:   10 years ago
What is gradient means here!?

Parabolic said:   10 years ago
How it will be parabolic?

Nilanthi said:   10 years ago
All other shapes are 2D. But, to connect two gradients it should be a parabolic which can be drawn in 3D.

Reuben said:   10 years ago
A rising gradient of 1 in 40 is to be connected with a falling gradient of 1 in 75 by means of a vertical equal tangent parabolic curve 400 m in length. The reduce level at the intersection point of the tangent is 26.850.

Calculate:

(1) The rate of change of grade.

(2) The reduced levels at the beginning and end tangent points.

Mahesh said:   10 years ago
The main design criteria in a vertical curve is headlight sight distance. So I think it may be circular as the sight distance available at each point is same.

Garima varshney said:   10 years ago
Because rate of change of gradient in parabolic curve is constant.

So generally used parabolic type of curve.


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