Civil Engineering - Highway Engineering

26. 

Curves in the same direction separated by short tangents, are called

A. simple circular curves
B. compound curves
C. transition curves
D. broken-back curves.
E. None of these.

Answer: Option D

Explanation:

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27. 

When an up gradient of a highway meets a downgrade, the vertical curve provided, is known as

A. valley curve
B. sag curve
C. summit curve
D. all the above.

Answer: Option C

Explanation:

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28. 

If the coefficient of friction on the road surface is 0.15 and a maximum super-elevation 1 in 15 is provided, the maximum speed of the vehicles on a curve of 100 metre radius, is

A. 32.44 km/hour
B. 42.44 kg/hour
C. 52.44 km/hour
D. 62.44 km/hour
E. 72.44 km/hour

Answer: Option C

Explanation:

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29. 

The maximum distance of the apex of a vertical curve of length L from the point of intersection of two grades + g1%, and - g2% (g1 > g2), is

A.
B.
C.
D.

Answer: Option C

Explanation:

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30. 

The wall constructed for the stability of a back filling portion of a road on the down hill side, is known as

A. retaining wall
B. breast wall
C. parapet wall
D. all the above.

Answer: Option A

Explanation:

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