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INDIABIX > highway > Flashcards

highway Flashcards

1
Q

The minimum value of camber provided for thin bituminous surface hill roads, is

A

CC/High Bituminous road - 1.7%(light rainfall), 2%(heavy rainfall).
Thin Bituminous road - 2%(light rainfall), 2.5(heavy rainfall).
WBM/gravel road - 2.5%(light rainfall), 3%(heavy rainfall).
Earthen raod - 3%(light rainfall), 4%(heavy rainfall).

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2
Q

Road makers along roads from the edge of a kerb should not be less than

A

60 cm

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3
Q

The usual width of parapet walls along Highways in hilly region, is

A

60 cm

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4
Q

The road foundation for modern highways construction, was developed by

[A].	Tresguet
[B].	Telford
[C].	Macadam
[D].	Tresguet and Telford simultaneously
[E]. Telford and Macadam simultaneously.	@
A

Road construct sequence:

Romans — Tresaguet (France) , Metcalf (England) — Telford (England) — John Macdam (London).

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5
Q

According to Highway Research Board of U.S.A. practical land width, is

A

3.6m

india 3.5 m

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6
Q

The basic formula for determination of pavement thickness was first suggested by

A

Goldbeck

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7
Q

According to the recommendations of Nagpur Conference, the width formation of an ideal National Highway in hard rock cutting, is

A

7.9 m

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8
Q

safety fencing on embankment roads

A

[A]. Safety fences are provided on either side of a roadway if embankments are in excess of 6 metres
[B]. Safety fences are provided on outside of the curves of radii less than 750 m if the embankments are between 3 metres and 6 metres
[C]. Guard stones are provided at 2.5 metres intervals if embankments are between 1.6 metres to 3 metres

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9
Q

ruling gradient in planes

A

Ruling gradient for plain is 1/30 ie 3.3%.
Limiting gradient for plain is 1/20 ie5%.
Exceptional gradient for plain is 1/15 ie 6.7%.

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10
Q

The head light of vehicles should be such that its lower beam illuminates objects at

A

30 m

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11
Q

The length of the side of warning sign boards of roads is

A

45 cm

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12
Q

A single lane carriage way whenever changes to two-lane carriage way, is affected through a taper of

A

1 in 15 to 1 in 20

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13
Q

Maximum number of passenger cars that can pass a given point on a road during one hour under the most ideal road way and traffic conditions, is known as

[A]. traffic density
[B].
basic capacity of traffic lane @
[C]. possible capacity of traffic lane

A

Ideal - Basic capacity.
Prevailing - Possible capacity.
Unreasonable - Practical capacity.

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14
Q

The minimum ratio of the radii of two circular curves of a compound curve, is kept

A

1.5m

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15
Q

Border Roads Organisation for hilly regions, was formed in

A

The Border Roads Organization (BRO) was conceived and raised in the year 1960 by Pandit Jawaharlal Nehru, the great visionary and the first Prime Ministry of India. This was done with the aim of coordinating the speedy development of network of roads in the North and the North Eastern border regions of the country. BRO is regarded as a symbol of nation-building, national integration and an inseparable component in maintaining the security and integrity of the country.

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16
Q

According to IRC : 52-1973, for a single lane National Highway in hilly region, width of the carriageway

A

A. width of the carriageway must be 3.75 m
B. shoulders on either side must be 1.25 m
C. total width of the road-way must be 6.25 m

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17
Q

Pick up the correct statement from the following:

[A]. Long tangent sections exceeding 3 km in length should be avoided
[B]. Curve length should be at least 150 metres for a deflection angle of 5 degress
[C]. For every degree decrease in the deflection angle, 30 metre length of curve to be increased
[D]. If the deflection angle is less than 1°, no curve is designed
[E].
All the above. @

A

Pick up the correct statement from the following:

[A]. Long tangent sections exceeding 3 km in length should be avoided
[B]. Curve length should be at least 150 metres for a deflection angle of 5 degress
[C]. For every degree decrease in the deflection angle, 30 metre length of curve to be increased
[D]. If the deflection angle is less than 1°, no curve is designed
[E].
All the above. @

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18
Q

Pick up the correct statement from the following:

[A]. Seasonal cycle of traffic volume during April and November, is usually near the annual average
[B]. Mid-winter seasonal cycle of traffic is least
[C]. Mid-summer seasonal cycle of traffic is highest
[D].
All the above. @

A

Pick up the correct statement from the following:

[A]. Seasonal cycle of traffic volume during April and November, is usually near the annual average
[B]. Mid-winter seasonal cycle of traffic is least
[C]. Mid-summer seasonal cycle of traffic is highest
[D].
All the above. @

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19
Q

To prevent movement of moisture from subgrade to road pavement at the same level as that of water-table, thickness of a cut off layer of coarse sand, is

A

15 cm

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20
Q

The normal road width of National and State highways

[A]. is kept 45 m
[B]. in plain and rolling terrain built-up area, is 30 m
[C]. in mountainous built-up area is 20 m
[D].
All the above. @

A

The normal road width of National and State highways

[A]. is kept 45 m
[B]. in plain and rolling terrain built-up area, is 30 m
[C]. in mountainous built-up area is 20 m
[D].
All the above. @

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21
Q

The first stage of deciding the alignment of a hill road, is

A

MRP TD

  1. Map study
  2. Reconnaissance
  3. Preliminary
  4. Trace out
  5. Detailed study.
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22
Q

While designing hair pin bends on higways, the minimum

[A].	designed speed is 20 km/hour
[B].	gradient is 1 in 40
[C].	gradient is 1 in 200
[D].	superelevations is 1 in 10
[E].	
All the above.	@
A 
Minimum design speed = 20 KMPH.
Minimum length of transition curve = 15m.
Gradient max = 2.5% & min = 0.5%.
Super elevation= 10%.
Minimum Roadway ODR =7.5 (VR = 6.5M).
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23
Q

Pick up the incorrect statement from the following:

[A].
Tresguet did not provide the top camber for the drainage of surface water @
[B]. Tresguet provided the top camber for the drainage of surface water
[C]. Telford provided two layers of stones in the central 5.4 m width and one layer was provided on the sides
[D]. Macadam provided a camber to the formation at the dug-up state, to drain percolated water.

A

Pick up the incorrect statement from the following:

[A].
Tresguet did not provide the top camber for the drainage of surface water @

correct
[B]. Tresguet provided the top camber for the drainage of surface water
[C]. Telford provided two layers of stones in the central 5.4 m width and one layer was provided on the sides
[D]. Macadam provided a camber to the formation at the dug-up state, to drain percolated water.

24
Q

For the administration of road transport, a Motor Vehicle Act was enacted in

A

motor vehicle act was made in 1939 and it was amendment in 1977.

25
Q

The ideal shape of a transition curve, is

[A].	
clothoid	@
[B].	cubic spiral
[C].	cubic parabola
[D].	lamniscate
[E].	none of these.
A

Spiral = clothoid = Glover’s spiral = ideal.

Cubic parabolla = leminscate = Indian railyway.

So, Answer A.

26
Q

At a road junction, 7 cross conflict points are severe if

[A].	both are one-way roads
[B].	both are two-way roads
[C].	
one is two-way road and other is one-way road	@
[D].	none of these.
A

Both 2 way- crossing conflict 16 and merging conflicts 8 = 24.
One 2 way & other 1 way- crossing conflict 7 and merging conflict 4 = 11.
Both 1 way- crossing conflict 4 and merging conflicts 2 = 6.

27
Q

Bottom-most component of a flexible pavement, is

A

subgrade

28
Q

Enoscope is used to determine

[A]. spot speed
[B]. average speed
[C]. travel time
[D]. none of these.

A

A. spot speed

29
Q

The minimum vertical clearance of overhanging cliffs or any other structure above the surface of a hill road, should be

[A].	3 m
[B].	4 m
[C].	
5 m	@
[D].	6 m
[E].	4.5 m
A

It is IRC 54 section 8 clearly specifies this

30
Q

The usual width of side drains along Highways in hilly region, is

A

60 cm

31
Q

If cross slope of a country is greater than 60%, the terrain is classified as

A

Less than 10% —-plain,
10% -25% —–rolling,
25% -60%mountainous,
more than 60% -steep.

32
Q

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.	@  zero
A

Sub-grade 0.6-1 m above HFL of the water table and P. Index of subgrade >1.

For Fine Sand Cut-Off Layer = 350mm.
For Coarse Sand=150mm.
For Coarse Gravel=150mm.

Sub-grade 0.6-1 m above HFL of the water table and P. Index of subgrade <1.
For Fine Sand Cut-Off Layer = 300mm.
For Coarse Sand=100mm.
For Coarse Gravel=100mm.

Refer: IRC 34-2011.

33
Q

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.
A

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.
34
Q

f 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
A

1525 (L + 7.3) - 14.7 L2

35
Q

For a 6.6 m wide two lane pavement, berms are provided on either side having a width of

[A].	l.00 m
[B].	1.25 m
[C].  1.50 m	@
[D].	1.75 m
[E].	2.00 m
A

For a 6.6 m wide two lane pavement, berms are provided on either side having a width of

[A].	l.00 m
[B].	1.25 m
[C].	1.50 m	@
[D].	1.75 m
[E].	2.00 m
36
Q

1.R.T.D.A. (Indian Roads and Transport Development Association) was set up at Bombay in

[A].	1907
[B].	1917
[C].	1927	@
[D].	1937
[E].	1942
A

It is also known as jaykar committee

37
Q

Depth of reinforcement below the surface of a concrete pavement, is generally kept

A

5 cm

38
Q

When a number of hair pin bends are introduced, a minimum intervening distance in between is kept

[A]. 20 m
[B]. 40 m
[C]. 60 m @
[D]. 100 m

A

Minimum distance between two successive hair pin bends excluding the length of transition and circular curve should be minimum 60 metre.

39
Q

The width formation of a road means the width of

[A]. carriageway
[B]. pavement and shoulders
[C]. embankment at ground level
[D]. embankment at the top level. @

A

The width formation of a road means the width of

[A]. carriageway
[B]. pavement and shoulders
[C]. embankment at ground level
[D]. embankment at the top level. @

40
Q

For a poorly graded sub-grade soil, thickness of sub-base, is

A

30 cm

41
Q

For clear distinct vision, images of obstructions should fall on the retina with a cone of

A

3°

5° indiabix

42
Q

An exceptional grade may be provided upto 1 in 12 along hill roads, if the length does not exceed

A

60 m per km

43
Q

On most smooth hard surfaced roads, rolling resistance to moving vehicles, ranges from

[A].	5 kg to 7 kg/tonne
[B].	7 kg to 9 kg/tonne
[C].	9 kg to 11 kg/tonne	@
[D].	11 kg to 13 kg/tonne
[E].	none of these.
A

On most smooth hard surfaced roads, rolling resistance to moving vehicles, ranges from

[A].	5 kg to 7 kg/tonne
[B].	7 kg to 9 kg/tonne
[C].	9 kg to 11 kg/tonne	@
[D].	11 kg to 13 kg/tonne
[E].	none of these.
44
Q

.
Thickness of broken line markings on multi-lane road for lanes is generally kept

[A]. 10 cm @

A

The thickness of the broken line marking on multi Lane Road for highways varies with the type of Highway is it rural Highway or urban Highway or undivided Highway or divided Highway the minimum thickness for all these cases is 10 cm so it can be adopted as an answer if asked for the minimum.

45
Q

If a Lemniscate curve of transition throughout is introduced to connect two parallel roads, the maximum polar angle of the curve, is

[A].	10°
[B].	15°
[C].	20°
[D].	30°	@
[E].	45°
A

Polar angle — deflection /6.

= 180/6 = 30.

46
Q

Setting out of Lemniscate transition curves, is done with

[A]. perpendicular offsets
[B]. radial offsets
[C]. deflection angles
[D]. polar deflection angles. @

A

Setting out of Lemniscate transition curves, is done with

[A]. perpendicular offsets
[B]. radial offsets
[C]. deflection angles
[D]. polar deflection angles. @

47
Q

The normal road land width for a major district road in open area, is

A

45 - NH/SH
25 - MDR
15 - ODR
12 - VR

There are for Rolling N Plain Terrain.

48
Q

The gradients of trace cuts for hilly roads, are kept

[A]. equal to ruling gradient
[B]. 10 tO 20 per cent easier than ruling gradients @
[C]. 10 to 20 per cent steeper than ruling gradients
[D]. none of these.

A

The gradients of trace cuts for hilly roads, are kept

[A]. equal to ruling gradient
[B]. 10 tO 20 per cent easier than ruling gradients @
[C]. 10 to 20 per cent steeper than ruling gradients
[D]. none of these.

49
Q

Concrete pavement is provided if daily traffic per lane exceeds

A

1000 tonnes

50
Q

If d is the economic designed depth of a slab, the thickness of the cement concrete pavement slab at interior, is kept

[A].	1.275 d
[B].	1.125 d
[C].	0.85 d	@
[D].	0.75 d
[E].	0.60 d
A

If d is the economic designed depth of a slab, the thickness of the cement concrete pavement slab at interior, is kept

[A].	1.275 d
[B].	1.125 d
[C].	0.85 d	@
[D].	0.75 d
[E].	0.60 d
51
Q

Pick up the correct statement from the following:

[A]. Detailed survey is carried out for a strip of land about 15 m on either side of the trace cut along straight portions
[B]. Detailed survey is carried out for a strip of land about 30 m at sharp curves
[C]. Levels are taken along the trace cut at an interval of 20 m
[D]. Contour interval is generally adopted at 2 metres vertical interval
[E]. All the above. @

A

Pick up the correct statement from the following:

[A]. Detailed survey is carried out for a strip of land about 15 m on either side of the trace cut along straight portions
[B]. Detailed survey is carried out for a strip of land about 30 m at sharp curves
[C]. Levels are taken along the trace cut at an interval of 20 m
[D]. Contour interval is generally adopted at 2 metres vertical interval
[E]. All the above. @

52
Q

Indian Road Congress (I.R.C.) was founded and constituted with its head quarters at New Delhi, in

A

The Indian Roads Congress (IRC) is the Apex Body of Highway Engineers in the country. The IRC was set up in December, 1934 on the recommendations of the Indian Road Development Committee best known as Jayakar Committee set up by the Government of India with the objective of Road Development in India.

53
Q

In case of a hair pin bend of a highway,

[A]. minimum radius of inner curve is 14 m
[B]. minimum radius of transition is 15 m
[C]. circular compound curve may be provided
[D]. minimum road way width at apex for single lane highway, is 9 m
[E]. All the above. @

A

In case of a hair pin bend of a highway,

[A]. minimum radius of inner curve is 14 m
[B]. minimum radius of transition is 15 m
[C]. circular compound curve may be provided
[D]. minimum road way width at apex for single lane highway, is 9 m
[E]. All the above. @

54
Q

The maximum radial distance of a Lemniscate curve, having maximum polar angle α, is

A

3 R sin 2α

55
Q

The minimum cross fall of shoulders is kept

[A].	0.5%
[B].	1.0%
[C].	1.5%
[D].	2.5%
[E].	3%	@
A

Min cross fall for shoulder kept 0.5% steeper then pavement which subjects to min of 3%.

56
Q

While calculating the overtaking sight distance, the height of the object above road surface, is assumed

A

For ssd, height above object - 0.15m.
height for eye -1.2m.
For both case of OSD - 1.2m.

INDIABIX (17 decks)

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