Example 15.7 Design of a Compound Curve Figure 15.23 illustrates a compound curve that is to be set out at a highway intersec- tion. If the point of compound curve (PCC) is located at station (565 + 10.5), deter- mine the deflection angles for setting out the curve. 60 340 PČC 26 PC 26 PT R,-150 m 34 R,-105 m Figure 15.23 Compound Curve for Example 15.7

Example 15.7 Design of a Compound Curve Figure 15.23 illustrates a compound curve that is to be set out at a highway intersec- tion. If the point of compound curve (PCC) is located at station (565 + 10.5), deter- mine the deflection angles for setting out the curve. 60 340 PČC 26 PC 26 PT R,-150 m 34 R,-105 m Figure 15.23 Compound Curve for Example 15.7

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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V=445 suced by 2070: Q5/ A circular curve of 145.00 m radius is to be set out between two straights having deflection angle of 30°right, and 30 chainage of the point of intersection as 5 + 40.00. Calculate the necessary data for setting out the curve taking the length of one chain as 10 m. bi (10 H
H.W Example 9 If the direct length of the line of sight at a horizontal curve = 30m, the radius to the inside centerline of the curve= 50m. Find the minimum distance an object can be placed from the centerline of the inside lane of the curve without reducing the required SSD.
SITUATION 4: The distance between two intermediate points A and B on a simple curve is 60 m. Their deflection angles are respectively 4° and 10° measured from tangent through PC. 10. Compute the radius of the simple curve. a. 264.90 m c. 246.16 m d. 224.92 m b. 229.47 m 11. Compute the arc length from PC to A. c. 33.74 m а. 34.37 m b. 37.43 m d. 37.34 m 12. Compute the chord length from PC to B. a. 84.59 m b. 89.54 m c. 85.49 m d. 89.45 m
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2
Situation 2] A simple curve having a radius of 234.0 m has tangents of N28.5°E and N66.0°E. A line running parallel to the first tangent crosses the centerline of the curve at a distance 10 meters away from the first tangent. If chainage of station PC is 17+584, What is the deflection angle at the point of intersection of the line and the simple curve measured from PC? i. What is the chainage of the point of intersection? Compute the chord distance from PC to the point of intersection of the line and the ii. iii. curve.
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Q2/ setting out of curve by perpendicular offsets from tangent lines when deflection angle of interval = 10 22°48'; R=127.30assume
Road Engineering (Railway Engineering)