Civil Engineering - Highway Engineering

31. 

If the designed speed on a circular curve of radius 1400 m is 80 km/hour, no superelevation is provided, if the camber, is

A. 4%
B. 3%
C. 2%
D. 1.7%

Answer: Option C

Explanation:

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32. 

Width of a rotary round should be equal to

A. twice the width of narrowest radial road
B. width of the widest road
C. width of the widest road plus the width of one lane
D. width of the widest road plus 2 metres.

Answer: Option C

Explanation:

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33. 

To prevent movement of moisture from subgrade to road pavement on embankments about 0.6 m to 1 m higher than water table, the thickness of cut off layer of coarse sand used, is

A. 15 cm
B. 20 cm
C. 30 cm
D. 45 cm
E. none of these.

Answer: Option E

Explanation:

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34. 

The statement, regarding the size of stones used at the wearing surface. "The size of a stone used on a road must be in due proportion to the space occupied by a wheel of ordinary dimensions on a smooth level surface. The point of contact will be found to be longitudinal about 2.5 cm and every piece of stone put into the road which exceeds 2.5 cm in any of its dimension is mischievious" was made by

A. Telford
B. Macadam
C. Tresguet
D. Sully.

Answer: Option B

Explanation:

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35. 

If L metres is the distance between extreme axles of a vehicle, its gross load should not exceed

A. 1525 (L + 4.3) - 14.7 L2
B. 1526 (L + 5.3) - 14.7 L2
C. 1525 (L + 6.3) - 14.7 L2
D. 1525 (L + 7.3) - 14.7 L2
E. 1526 (L + 8.3) - 14.7 L2

Answer: Option D

Explanation:

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