Highway Engineering problems
- 1. In a braking test, a vehicle travelling at 36 km ph was stopped at a braking distance of 8.0 m. The average value of the vehicle's skid resistance (friction coefficient) is
Options- A. 0.64
- B. 6.25
- C. 0.16
- D. none of these Discuss
Correct Answer: 0.16
- 2. If V is the velocity in km.p.h., t the brake reaction time in seconds and ? the efficiency of the brakes, the stopping distance S of the vehicle, is
Options- A.
- B.
- C.
- D.
Discuss
Correct Answer:
- 3. Minimum number of 50 kg cement bags per cubic metre of concrete for a mix corresponding to crushing strength 280 kg/cm2 at 28 days, are
Options- A. 5.0
- B. 6.5
- C. 7.0
- D. 7.5
- E. 8.0 Discuss
Correct Answer: 6.5
- 4. Reference pillars fixed on the centre line of a proposed road, provide the following information:
Options- A. reduced distance (R.D.)
- B. horizontal distance of road from the centre line
- C. reduced level at the top of pillar
- D. formation level of the road
- E. all the above. Discuss
Correct Answer: all the above.
- 5. If the elevations along a road increase, the slope of the road along the longitudinal direction, is known as
Options- A. gradient
- B. grade
- C. positive grade
- D. negative grade. Discuss
Correct Answer: gradient
- 6. Concrete pavement is provided if daily traffic per lane exceeds
Options- A. 500 tonnes
- B. 750 tonnes
- C. 1000 tonnes
- D. 1250 tonnes
- E. 1300 tonnes Discuss
Correct Answer: 1000 tonnes
- 7. If R is the radius of a main circular curve, ? is the angle of deflection and ? is the polar deflection angle of any point, its radial distance is
Options- A. 3 R sin ?/3 sin 2?
- B. 3 R sin ?/2 sin 3?
- C. 3 R sin ?/3 sin ?/2
- D. 3 R sin 2? sin ? Discuss
Correct Answer: 3 R sin ?/3 sin 2?
- 8. Non-passing sight distance along a road is the longest distance at which the driver of a moving vehicle, may see an obstacle on the pavement
Options- A. 10 cm high
- B. 25 cm high
- C. 50 cm high
- D. 100 cm high
- E. 150 cm high Discuss
Correct Answer: 10 cm high
- 9. According to Indian Road Congress, the width of carriageway, is
Options- A. 3.75 m for single lane
- B. 7.0 m for two lanes without raised kerbs
- C. 7.5 m for two lanes with raised kerbs
- D. 10.5 m for three lanes pavements
- E. All the above Discuss
Correct Answer: All the above
- 10. The minimum superelevation in rolling terrain in plains, is limited to
Options- A. 4%
- B. 5%
- C. 6%
- D. 7%
- E. 10% Discuss
Correct Answer: 7%
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