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.

Prashanth said:   9 years ago
The gradient is nothing but a slope. And the best way to join 2 gradients using a vertical curve is obviously using a parabolic one.

Sadaf said:   8 years ago
The rising gradient is change 0.025 and falling 0.013333 beginning tanget elevation is 21.85 and end tangent elevation is 24.18.

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.

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

So generally used parabolic type of curve.

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.

Anwar said:   7 years ago
Curves are two types they are Summit curve and valley curve.

And the best ideal curve is Summit curve.

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

Madhusmita sahoo said:   1 decade ago
Vertical curve is parabolic(specification). Length is calculated by means of a circular curve.

Om Prakash said:   1 decade ago
Vertical curve is parabolic(specification). Length is calculated by means of a circular curve.

Pradipta majumder said:   5 years ago
Correct answer is circular.

Ideal summit curve is circular. But IRC recommend parabola.
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