# Civil Engineering - Highway Engineering

### Exercise :: Highway Engineering - Section 5

31.

If R is the radius of a main circular curve, Δ is the angle of deflection and α is the polar deflection angle of any point, its radial distance is

 A. 3 R sin Δ/3 sin 2α B. 3 R sin Δ/2 sin 3α C. 3 R sin Δ/3 sin α/2 D. 3 R sin 2Δ sin α

Explanation:

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32.

Super-elevation on roads in snow bound areas, should generally not exceed

 A. 15% B. 12% C. 10% D. 7% E. 6%

Explanation:

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33.

If the width of a pavement slab is 7.5 m, thickness 20 cm and working stress 1400 kg/cm2, spacing of 10 mm tie bars for the longitudinal joint, is

 A. 10 cm B. 20 cm C. 30 cm D. 40 cm E. 50 cm

Explanation:

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34.

Minimum number of 50 kg cement bags per cubic metre of concrete for a mix corresponding to crushing strength 280 kg/cm2 at 28 days, are

 A. 5 B. 6.5 C. 7 D. 7.5 E. 8

Explanation:

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35.

Three points, A, B and C 500 m apart on a straight road have 500 m, 505 m and 510 m as their reduced levels. The road is said to have

 A. no gradient between A and C B. a positive gradient between A and C C. a negative gradient between A and C D. a negative gradient between A and B E. a positive gradient between A and B followed by a negative gradient between B to C.