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The shape of the most commonly designed highway vertical curve is
  • a)
    circular (single radius)
  • b)
    spiral
  • c)
    circular (multiple radii)
  • d)
    parabolic
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
The shape of the most commonly designed highway vertical curve isa)cir...
  • The ideal vertical curve is a 2° Parabola
  • The most preferred curve for vertical alignment is parabolic.
Important Points
  • Square parabola is generally preferred due to the best riding quality, simplicity of calculation, and uniform rate of change of gradient.
  • In a circular curve, sight distance is available throughout the curve is constant.
  • Cubic parabola is generally preferred in the valley curve.
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The shape of the most commonly designed highway vertical curve isa)circular (single radius)b)spiralc)circular (multiple radii)d)parabolicCorrect answer is option 'D'. Can you explain this answer?
Question Description
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