Example 2:A vertical curve is to be constructed between a 3.5% grade and a -4% grade. Therequired sight distance is 150 m. The dangerous object is considered to be on thepavement surface, and the driver's eye level is at 1.05 m above the pavement surface.Determine the length of the vertical curve that will satisfy the passing sight distancerequirement.Еxample 3:A crest vertical curve is to be designed to join a 3% grade with a -2% grade at a sectionof a two-lane highway. Determine the minimum length of the curve if the design speed ofthe highway is 100 kph, and SSD= 174m.Example 4:An existing vertical curve on a highway joins a 4.4% grade with a -4.4% grade. If thelength of the curve is 150 m, and SSD is 105.9m, what is the maximum safe speed on thiscurve?

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Answered: Determine the length of the vertical…

Engineering

Civil Engineering

Determine the length of the vertical curve that will satisfy the passing sight distance requirement.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Curve setting

A curve is a turn that is provided horizontally or vertically in the design of highways, railways, and runways. A curve connects two straight lines that are separated by the deflection angle. It helps to change the direction and alignment of the highways, railway tracks, and runways. Therefore, the gradual change in their alignment is made by using a curve to provide comfort to the passengers and this also provides an easy turn to change the direction of the moving vehicle.

Question

Example 2:
A vertical curve is to be constructed between a 3.5% grade and a -4% grade. The
required sight distance is 150 m. The dangerous object is considered to be on the
pavement surface, and the driver's eye level is at 1.05 m above the pavement surface.
Determine the length of the vertical curve that will satisfy the passing sight distance
requirement.
Еxample 3:
A crest vertical curve is to be designed to join a 3% grade with a -2% grade at a section
of a two-lane highway. Determine the minimum length of the curve if the design speed of
the highway is 100 kph, and SSD= 174m.
Example 4:
An existing vertical curve on a highway joins a 4.4% grade with a -4.4% grade. If the
length of the curve is 150 m, and SSD is 105.9m, what is the maximum safe speed on this
curve?

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