Highway Engineering

111. If the radius of a main curve is 300 m and length of the transition curve is 100 m, the angle with tangent to locate the junction point, is

1. 1° 11'
2. 2° 11'
3. 3° 11'
4. 4° 11'

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112. If the radius of curvature of a hill road is 50 m, the percentage grade compensation should be

1. 60/R
2. 70/R
3. 75/R
4. 80/R

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113. If the rate of change of grade permitted along a vertical curve is r and total change of grade is g%, the length L of the curve to be provided, is

1. L = (r × 100/g) m
2. L = (g × 100/r) m
3. L = (r + g) × 100m
4. L = [100/(r + g)] m

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114. If the rate of change of the super-elevation along a curved portion of a 7 metre wide road is 1 in 150 and the maximum super-elevation allowed is 1 in 15, the maximum length of the transition curve to be provided at either end, is

1. 65 m
2. 70 m
3. 75 m
4. 80 m

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115. If the ruling gradient on any highway is 3%, the gradient provided on the curve of 300 metre radius, is

1. 2.00 %
2. 2.25 %
3. 2.50 %
4. 2.75 %

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116. If the velocity of moving vehicles on a road is 24 km/per hour, stopping distance is 19 metres and average length of vehicles is 6 metres, the basic capacity of lane, is

1. 500 vehicles per hour
2. 700 vehicles per hour
3. 1000 vehicles per hour
4. 1250 vehicles per hour

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117. 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

1. 10 cm
2. 20 cm
3. 30 cm
4. 40 cm

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118. If the width of carriage way is 12.5 metres, outer edge 50 cm higher than the inner edge, the required super elevation is

1. 50 cm
2. 1 in 25
3. 1 in 400
4. 1 in 40

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119. If V is speed in km/hour and R is radius of the curve, the super-elevation e is equal to

1. V²/125 R
2. V²/225 R
3. V²/325 R
4. V²/25 R

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120. If V is speed of a moving vehicle, r is radius of the curve, g is the acceleration due to gravity, W is the width of the carriageway, the super elevation is

1. WV/gr
2. W²V/gr
3. WV²/gr
4. WV/gr²

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