Practice A Parabolic Vertical Curve Is To Connect A –2.2% Gradient To A +1.9% Gradient... (2.70)

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Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is a vertical curve?
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Think of how hills are formed in a road.
Question 2.
Why do we need vertical curves?
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Consider driver comfort and visibility.
3Question 3.
What is the required length of a vertical curve connecting a -2.2% gradient to a +1.9% gradient?
- 10.14 m
- 14.28 m
- 20.0 m
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Review the gradient transition designs.
4Question 4.
True or False: Vertical curves have no effect on driver visibility during elevation changes.
- True
- False
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Consider what happens on steep climbs or descents.
Question 5.
A parabolic curve is to be designed between a -1% gradient and a +3% gradient on a highway with a design speed of 100 km/h. Calculate the minimum length of the vertical curve required.
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Check how speed and gradients dictate curve length.
Question 6.
Discuss the effects of neglecting vertical curves on highway designs in terms of safety and comfort.
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Use examples of sharp inclines or declines.

4 more questions in this section. Enroll free to practise them all.