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Civil Engineering
Just do question 2

Just do question 2

Traffic and Highway Engineering
Traffic and Highway Engineering
5th Edition
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Garber, Nicholas J.
Chapter15: Geometric Design Of Highway Facilities
Section: Chapter Questions
Problem 21P
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Question

Just do question 2

**Designing a Vertical Sag Curve** You are designing a vertical sag curve joining a -3% grade to a +2% grade. The design speed is 60 mph. For the design of the curve, the stopping sight distance is based on a 0% grade. 1. **Is the shape of the vertical curve circular, elliptic, or parabolic?** 2. **What is the value of A?**
Transcribed Image Text:**Designing a Vertical Sag Curve** You are designing a vertical sag curve joining a -3% grade to a +2% grade. The design speed is 60 mph. For the design of the curve, the stopping sight distance is based on a 0% grade. 1. **Is the shape of the vertical curve circular, elliptic, or parabolic?** 2. **What is the value of A?**
Expert Solution
Step 1: Definition of A

The "A" is the algebraic difference of the grades. As shown below.

Civil Engineering homework question answer, step 1, image 1

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