Highway Sheet 17

1) Question.

The minimum value of camber provided for thin bituminous surface hill roads, is
Answer.
- 1
  
  2.2%
- 2
  
  2.5%
- 3
  
  3.0%
- 4
  
  3.5%
Answer: 2

Explanation:
2) Question.

The usual width of side drains along Highways in hilly region, is
Answer.
- 1
  
  50 cm
- 2
  
  60 cm
- 3
  
  70 cm
- 4
  
  80 cm
Answer: 2

Explanation:
3) Question.

The usual width of parpet walls along Highways in hilly region, is
Answer.
- 1
  
  50 cm
- 2
  
  60 cm
- 3
  
  70 cm
- 4
  
  80 cm
Answer: 2

Explanation:
4) Question.

According to IRC:52-1973, for a single lane National Highway in hilly region,
Answer.
- 1
  
  width of the carriageway must be 3.75 m
- 2
  
  shoulders on either side must be 1.25 m
- 3
  
  total width of the road-way must be 6.25 m
- 4
  
  all of the above
Answer: 4

Explanation:
5) Question.

The wideth of the right of way, is influenced by
Answer.
- 1
  
  formation width
- 2
  
  shoulders or berms
- 3
  
  classification of road
- 4
  
  All the above
Answer: 4

Explanation:
6) Question.

An upgrade $g_{1} %$ is followed by a downgrade $g_{2} %$ . The equation of the parabolic curve of lenght L to be introduced, is given by
Answer.
- 1
  
  $g \frac{(g_{1} - g_{2})}{100 L} x^{2}$
- 2
  
  $y = \frac{(g_{1} + g_{2})}{200 L} x^{2}$
- 3
  
  $y = \frac{(g_{1} - g_{2})}{400 L} x^{2}$
- 4
  
  $y = \frac{(g_{2} + g_{1})}{800 L} x^{2}$
Answer: 2

Explanation:
7) Question.

The maximum distance of the apex of a vertical curve of length L from the point of intersection of two grades $+ g_{1} %, a n d - g_{2 %} (g_{1} > g_{2}),$ is
Answer.
- 1
  
  $\frac{L (g_{1} - g_{2})}{400}$
- 2
  
  $\frac{L (g_{1} - g_{2})}{800}$
- 3
  
  $\frac{L (g_{1} + g_{2})}{800}$
- 4
  
  $\frac{L (g_{2} - g_{1})}{300}$
Answer: 3

Explanation:
8) Question.

In an ideal transition curve, the radius of curvature
Answer.
- 1
  
  is constant
- 2
  
  at any piint is directly proportional to its distance from the point of commencement
- 3
  
  is inversely proportional to the radius of main curve
- 4
  
  is inversely proportional to the radius of main curve
Answer: 3

Explanation:
9) Question.

An ideal vertical curve is
Answer.
- 1
  
  true spiral
- 2
  
  cubic spiral
- 3
  
  cubic parabala
- 4
  
  none of these
Answer: 4

Explanation:
10) Question.

The radius of curvature provided along a transtion curve, is
Answer.
- 1
  
  minimum at the beginning
- 2
  
  same throughout its length
- 3
  
  equal to the radius of circular curve
- 4
  
  varying from infinity to the radius of circular curve
Answer: 4

Explanation:
11) Question.

In the Group Index method of flexible pavement design, which one of the following factors decides the thickness of base and surface course ?
Answer.
- 1
  
  percentage of sub-grade soil passing 75 micron sieve.
- 2
  
  type of surface and base course materials.
- 3
  
  daily volume of commercial vehicles.
- 4
  
  percentage of liquid limit of subgrade soil.
Answer: 3

Explanation:
12) Question.

While designing the superelevation of a highway, its maximum value is fixed considering the need to -
Answer.
- 1
  
  avoid toppling of slow moving vehicles in mixed traffic flow.
- 2
  
  avoid transverse skidding.
- 3
  
  provide drainage.
- 4
  
  counteract centrifugal force due to 75% of design speed.
Answer: 1

Explanation:
13) Question.

While aligning a hill road with a ruling gradient of 1 in 20, a horizontal curve of radius 80 m is encountered. The compensated gradient on the curve will be -
Answer.
- 1
  
  1 in 15
- 2
  
  1 in 17
- 3
  
  1 in 25
- 4
  
  1 in 27
Answer: 3

Explanation:
14) Question.

Which one of the following is associated with "Limiting Gradient" on highways ?
Answer.
- 1
  
  requirement of maximum tractive effort for a short distance.
- 2
  
  requirement of minimum tractive effort on the whole gradient.
- 3
  
  efficient drainage conditions.
- 4
  
  alignment design in general.
Answer: 1

Explanation:
15) Question.

In which one of the following types of bituminous constructions is proportioning of materials determined from laboratory tests ?
Answer.
- 1
  
  grouted macadam.
- 2
  
  premix carpet.
- 3
  
  bituminous or asphalt concrete.
- 4
  
  bituminous macadam.
Answer: 3

Explanation:
16) Question.

For sandy soils the most common method of stabilization is -
Answer.
- 1
  
  soil cement stabilization.
- 2
  
  mechanical stabilization.
- 3
  
  soil lime stabilization.
- 4
  
  soil bitumen stabilization.
Answer: 4

Explanation:
17) Question.

Select the incorrect statement ?
Answer.
- 1
  
  emulsion is used for stabilizing desert sand.
- 2
  
  soil lime stabilization is very effective for stabilizing black cotton soils.
- 3
  
  soil lime stabilization is quite effective in warm regions.
- 4
  
  soil cement stabilization is quite durable for surface course.
Answer: 4

Explanation:
18) Question.

In hill roadds the side drains are provided -
Answer.
- 1
  
  only on the hill side of road.
- 2
  
  only on the opposite side of hill.
- 3
  
  on both sides of road.
- 4
  
  none of the above.
Answer: 1

Explanation:
19) Question.

The walls which are necessary on the hill side of roadway where earth has to be retained from slipping is known as -
Answer.
- 1
  
  retaining wall.
- 2
  
  breast wall.
- 3
  
  parapet wall.
- 4
  
  none of the above.
Answer: 2

Explanation:
20) Question.

In highway construction on superelevated curves, the rolling shall proceed from
Answer.
- 1
  
  sides towards the centre
- 2
  
  centre towards the sides
- 3
  
  lower edge towards the upper edge
- 4
  
  upper edge towards the lower edge
Answer: 3

Explanation:

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