1. or the embankment by using Simpson's rule. 9. (a) What are the primary elements of geometric design? (b) What do you understand by the term design speed of highway (c) Mention the geometric design features which are affected by the choice of design speed (d) Which forces act on a vehicle when is passes from a straight path to a curved one? 10. A fast moving vehicle on a 2 way street driving at the design speed of 80km/h is to overtake a slower moving vehicle at 50km/h. If the acceleration of the overtaking vehicle is 3.6km/h/s. Calculaté: (a) The minimum overtaking sight distance (b) Minimum stopping sight distance Assume reaction time of the driver as 2 seconds and coefficient of friction as 0.4 11. The straights AB, BC and CD have deflection angles at B and at Cof 600 and 450 respectively AB connected to BC a continuous reverse curve formed of two circular curves of equal radius with transition curve. (a) What will be the length of BC if design speed 60km/h, radius of the circular curve 600m, rate of change of acceleration not to exceed 0.3m/s². (b) What will be the minimum offset and deflection angle for the transition curves . (c) Calculate the super elevation of this speed if the straights represent a road of 10m wide. 12. (a) Discuss the term "Traffic operations" in Highway Engineering (b) Discuss briefly traffic regulations law at phases in highway engineering Operations 3 Samuli I. CS CamScanner 13. A road bend which deflects 800 is to be designed for a maximum speed of 100km/h a minimum centrifugal ratio of 14 and a maximum rate of change of acceleration of 30cm/s². The curve consists of a circular arc combined with the cubic spirals. Calculate: i. The radius of circular arc ii. The requisite length of transitions iii. The total length of composite curve iv. The chainages of the beginning and the end of transition curves and of the junctions of the transition curves with the circular curves.
1. or the embankment by using Simpson's rule. 9. (a) What are the primary elements of geometric design? (b) What do you understand by the term design speed of highway (c) Mention the geometric design features which are affected by the choice of design speed (d) Which forces act on a vehicle when is passes from a straight path to a curved one? 10. A fast moving vehicle on a 2 way street driving at the design speed of 80km/h is to overtake a slower moving vehicle at 50km/h. If the acceleration of the overtaking vehicle is 3.6km/h/s. Calculaté: (a) The minimum overtaking sight distance (b) Minimum stopping sight distance Assume reaction time of the driver as 2 seconds and coefficient of friction as 0.4 11. The straights AB, BC and CD have deflection angles at B and at Cof 600 and 450 respectively AB connected to BC a continuous reverse curve formed of two circular curves of equal radius with transition curve. (a) What will be the length of BC if design speed 60km/h, radius of the circular curve 600m, rate of change of acceleration not to exceed 0.3m/s². (b) What will be the minimum offset and deflection angle for the transition curves . (c) Calculate the super elevation of this speed if the straights represent a road of 10m wide. 12. (a) Discuss the term "Traffic operations" in Highway Engineering (b) Discuss briefly traffic regulations law at phases in highway engineering Operations 3 Samuli I. CS CamScanner 13. A road bend which deflects 800 is to be designed for a maximum speed of 100km/h a minimum centrifugal ratio of 14 and a maximum rate of change of acceleration of 30cm/s². The curve consists of a circular arc combined with the cubic spirals. Calculate: i. The radius of circular arc ii. The requisite length of transitions iii. The total length of composite curve iv. The chainages of the beginning and the end of transition curves and of the junctions of the transition curves with the circular curves.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:1.
or the embankment by using Simpson's rule.
9. (a) What are the primary elements of geometric design?
(b) What do you understand by the term design speed of highway
(c) Mention the geometric design features which are affected by the choice of design
speed
(d) Which forces act on a vehicle when is passes from a straight path to a curved one?
10. A fast moving vehicle on a 2 way street driving at the design speed of 80km/h is to
overtake a slower moving vehicle at 50km/h. If the acceleration of the overtaking
vehicle is 3.6km/h/s. Calculaté:
(a) The minimum overtaking sight distance
(b) Minimum stopping sight distance
Assume reaction time of the driver as 2 seconds and coefficient of friction as 0.4
11. The straights AB, BC and CD have deflection angles at B and at Cof 600 and 450
respectively AB connected to BC a continuous reverse curve formed of two circular
curves of equal radius with transition curve.
(a) What will be the length of BC if design speed 60km/h, radius of the circular
curve 600m, rate of change of acceleration not to exceed 0.3m/s².
(b) What will be the minimum offset and deflection angle for the transition curves
.
(c) Calculate the super elevation of this speed if the straights represent a road of 10m
wide.
12. (a) Discuss the term "Traffic operations" in Highway Engineering
(b) Discuss briefly traffic regulations law at phases in highway engineering
Operations
3
Samuli I.
CS CamScanner
13. A road bend which deflects 800 is to be designed for a maximum speed of 100km/h
a minimum centrifugal ratio of 14 and a maximum rate of change of acceleration of
30cm/s². The curve consists of a circular arc combined with the cubic spirals.
Calculate:
i. The radius of circular arc
ii. The requisite length of transitions
iii. The total length of composite curve
iv. The chainages of the beginning and the end of transition curves and of the
junctions of the transition curves with the circular curves.
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