Highway Engineering

321. To indicate proper control of consistency of a freshly mixed concrete for pavement construction, the slump should be between

1. 3 to 5 cm
2. 4 to 6 cm
3. 5 to 7 cm
4. 7 to 10 cm

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322. To prevent a head-on-collision of vehicles travelling in opposite directions along four-lane roads

1. Markings on the road are provided
2. Physical dividers are provided
3. Area dividers are provided
4. Medians of wide area are provided

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323. To prevent compressive stresses in a rigid concrete pavement, the joint provided, is

1. Expansion joint
2. Contraction joint
3. Hinged joint
4. All the above

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

1. 15 cm
2. 20 cm
3. 30 cm
4. 45 cm

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325. To prevent movement of moisture from sub-grade 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

1. 15 cm
2. 20 cm
3. 30 cm
4. None of these

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326. Traffic census is carried out for

1. Speed and delay study
2. Road parking study
3. Traffic volume study
4. All the above

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327. Traffic engineering only includes

1. Planning of regulatory measures
2. Design and application of control devices
3. Analysis of traffic characteristics
4. All the above

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328. Traffic surveys are carried out

1. To know the type of traffic
2. To determine the facilities to traffic regulations
3. To design proper drainage system
4. All the above

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329. Transverse joints are provided at distances varying from

1. 10 m to 15 m
2. 12 m to 18 m
3. 16 m to 24 m
4. 17 m to 27 m

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330. Tyre pressure influences the

1. Total depth of pavement
2. Quality of surface course
3. Both the above
4. None of the above

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