(a)
Using the vertical curvature determine minimum length of vertical curve.
Answer to Problem 4P
Explanation of Solution
Given information:
Station
Elevation
Grades
Grades
Design speed of
Calculation:
Length of curve is given by formula,
A is the grade difference between
Rate of vertical curvature from textbook Table
Substitute in equation
Minimum length of vertical curve is
(b)
Stations and elevations of BVC and EVC.
Answer to Problem 4P
Station at BVC is
Tangent elevation at BVC is
Explanation of Solution
Given information:
Station
Elevation
Grades
Grades
Design speed of
Calculation:
Therefore station at BVC is
Therefore tangent elevation at BVC is
(c)
Elevation at each
Answer to Problem 4P
Station | BVC distance
| Tangent elevation | offset | Curve elevation(Tangent elevation) |
Explanation of Solution
Given information:
Station
Elevation
Grades
Grades
Design speed of
Calculation:
Determine the offset,
For every
Station | BVC distance
| Tangent elevation | offset | Curve elevation(Tangent elevation) |
(d)
Station and elevation of high point.
Answer to Problem 4P
Explanation of Solution
Given information:
Station
Elevation
Grades
Grades
Design speed of
Calculation:
Distance of the high point of BVC is given by,
Difference beteween both elevation of BVC and highpoint.
Conclusion:
Therefore elevation of high point is
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Chapter 15 Solutions
Traffic and Highway Engineering
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- Traffic and Highway EngineeringCivil EngineeringISBN:9781305156241Author:Garber, Nicholas J.Publisher:Cengage Learning