Highway Engineering

11. Along a hill road, a side drain is provided on

1. Outer side of a spur curve
2. Outer side of a re-entrant curve
3. Outer side of both (a) and (b)
4. Inner side of both (a) and (b)

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12. Along high ways confirmatory route markers are generally fixed

1. Before the crossing on the left side
2. After the crossing on the left side
3. Before the crossing on the right side
4. After the crossing on the right side

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13. Along horizontal curves, if centrifugal force exceeds lateral friction, vehicles may

1. Skid
2. Slip
3. Not be affected
4. None of these

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

1. 45 m per km
2. 60 m per km
3. 75 m per km
4. 90 m per km

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15. An Executive Engineer of roads, executes works under direct control of

1. Superintending Engineer
2. Secretary to the Govt
3. Chief Engineer
4. None of these

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16. An ideal vertical curve is

1. True spiral
2. Cubic spiral
3. Cubic parabola
4. None of these

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17. An upgrade g₁% is followed by a downgrade g₂%. The equation of the parabolic curve of length L to be introduced, is given by

1. y = g [(g₁ - g₂)/100L]x²
2. y = [(g₁ - g₂)/200L] x²
3. y = [(g₁ - g₂)/400L] x²
4. y = [(g₁ - g₂)/800L] x²

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18. Any gradient on a road is said to be an exceptional gradient, if it is

1. More than ruling gradient
2. Less than average gradient
3. More than floating gradient
4. Less than minimum gradient or more than maximum gradient

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19. Area of steel required per metre width of pavement for a length of 20 m for design wheel load 6300 kg and permissible stress in steel 1400 kg/cm², is

1. 70 kg/sq cm
2. 80 kg/sq cm
3. 90 kg/sq cm
4. 100 kg/sq cm

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20. As per IRC recommendations, the average level of illumination on important roads carrying fast traffic is

1. 10 Lux
2. 15 Lux
3. 20 Lux
4. 30 Lux

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