Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Question
Chapter 15, Problem 10P
To determine
(a)
The length of the vertical curve using the AASHTO method.
To determine
(b)
The station of the BVC of the crest vertical curve.
To determine
(c)
The elevation of the BVC of the crest vertical curve.
To determine
(d)
The station of the EVC of the crest vertical curve.
To determine
(e)
The elevation of the EVC of the crest vertical curve.
To determine
(f)
The station of the high point of the crest vertical curve.
To determine
(g)
The elevation of the high point of the crest vertical curve.
To determine
(h)
The elevation of station
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A crest vertical curve connects a +4.44% grade and a -6.87% grade. The PVI is at station 43 + 50.00 at an elevation of 1240.00 ft. The design speed is 30 mi/h. Determine:
(f ) The station of the high point
(g) The elevation of the high point
(h) The elevation of station 44 + 23.23
A crest vertical curve connects a +4.44% grade and a -6.87% grade. The PVI is at station 43 + 50.00 at an elevation of 1240.00 ft. The design speed is 30 mi/h. Determine: (a) The length of the vertical curve using the AASHTO method (“K” factors) (b) The station of the BVC (c) The elevation of the BVC (d) The station of the EVC (e) The elevation of the EVC (f ) The station of the high point (g) The elevation of the high point (h) The elevation of station 44 + 23.23
A +2.5% grade intersects with a –1.5% grade at station (53+524.25) at an elevation of 90 m.
If the design speed is 90 km/h, use AASHTO (2011) criteria to determine:
The minimum length of vertical curve using the rate of vertical curvature.
The stations and elevations of the BVC and EVC.
The elevation of each 20-m station.
The station and elevation of the highpoint.
Chapter 15 Solutions
Traffic and Highway Engineering
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