Road width 8.8 m of two lane National highways or State highways in mountainous terrain
-
excludes the width of parapet (0.6 m) -
excludes the width of side drain (0.6 m) -
excludes the width of parapet and side drain -
includes the width of parapet and side drain
If the number of lanes on the carriageway of a road is more than two, the total width of lane ways is equal to 3.0 m
-
+ 0.60 m -
+ 0.70 m -
+ 0.80 xn -
+ 0.90 m -
+ 1.50 m
The width of different roads as recommended in Nagpur plan by the Indian Road Conference for hilly region, is
-
same for National Highways -
different for National Highways -
same for State Highways -
same for Major District roads.
The absolute minimum sight distance required for stopping a vehicle moving with a speed ofkm ph, is
-
120 m -
200 m -
640 m -
none of these.
For maximum strength and durability minimum percentage of cement, by weight is
-
15% -
20% -
25% -
30% -
33%
The extra widening of pavements recommended by Indian Roads Congress for hill roads having radiusmetres, is
-
1.5 m -
1.0 m -
0.5 m -
0.0 m -
2.0 m
The first stage of deciding the alignment of a hill road, is
-
trace-out -
reconnaissance -
detailed survey -
preliminary survey.
Pick up the correct statement from the following:
-
Long tangent sections exceeding 3 km in length should be avoided -
Curve length should be at least 150 metres for a deflection angle of 5 degress -
For every degree decrease in the deflection angle, 30 metre length of curve to be increased -
If the deflection angle is less than 1°, no curve is designed -
All the above.
Minimum permissible speed on high speed roads, is decided on the basis of
-
15 percentile cumulative frequency -
20 percentile cumulative frequency -
30 percentile cumulative frequency -
40 percentile cumulative frequency.
Minimum thickness of a layer of fine sand required to cut off capillary rise of water completely, should be
-
40 cm -
52 cm -
64 cm -
76 cm -
80 cm
Along high ways confirmatory route markers are generally fixed
-
before the crossing on the left side -
after the crossing on the left side -
before the crossing on the right side -
after the crossing on the right side.
Camber in pavements is provided by
-
straight line method -
parabola method -
straight at the edges and parabolic at the crown -
all the above.
The steepest gradient permitted on roads which, in ordinary conditions, does not exceed, is known
-
ruling gradient -
maximum gradient -
exceptional gradient -
floating gradient -
all the above.
While designing hair pin bends on higways, the minimum
-
designed speed is 20 km/hour -
gradient is 1 in 40 -
gradient is 1 in 200 -
superelevations is 1 in 10 -
All the above.
Transverse joints are provided at distances varying from
-
10 m to 15 m -
12 m to 18 m -
16 m to 24 m -
17 m to 27 m -
25 m to 35 m
The ideal shape of a transition curve, is
-
clothoid -
cubic spiral -
cubic parabola -
lamniscate -
none of these.
If D is the degree of a curve, the percentage reduction of gradient, is
-
0.01 D -
0.02 D -
0.03 D -
0.04 D -
0.005 D
Length of vehicles does not affect
-
extra widening -
minimum radius of turning -
passing sight distance -
width of shoulders -
none of these.
The minimum design speed of various types of highways in plain terrain is the same as the ruling design speed of
-
rolling terrain -
mountainous terrain -
steep terrain -
none of these.
For night travel, the length of a valley curve should be such that the head light beam distance is the same as
-
stopping sight distance -
overtaking sight distance -
sum of (a) and (b) -
difference of (a) and (b)
Pick up the incorrect statement from the following:
-
Tresguet did not provide the top camber for the drainage of surface water -
Tresguet provided the top camber for the drainage of surface water -
Telford provided two layers of stones in the central 5.4 m width and one layer was provided on the sides -
Macadam provided a camber to the formation at the dug-up state, to drain percolated water.
At a road junction, 7 cross conflict points are severe if
-
both are one-way roads -
both are two-way roads -
one is two-way road and other is one-way road -
none of these.
Passing zones are generally not provided on
-
summit curves -
horizontal curves -
two lane highways -
all the above.
Stability of hill slopes depends upon
-
nature of the slope -
angle of the slope -
geological conditions -
ground water conditions -
all the above.
Cement grouted pavement is classified as
-
rigid pavement -
semi-rigid pavement -
flexible pavement -
none of these.
At a road junction, 7 cross conflict points are severe if
-
both are one-way roads -
both are two-way roads -
one is two-way road and other is one-way road -
none of these.
Passing zones are generally not provided on
-
summit curves -
horizontal curves -
two lane highways -
all the above.
If D is the degree of a curve, the percentage reduction of gradient, is
-
0.01 D -
0.02 D -
0.03 D -
0.04 D -
0.005 D
If W is the weight of a vehicle negotiating an upgrade 1 : S along a track having co-efficient of resistance μ, the tractive force T is given by
If N is the net difference of grades, S is the minimum overtaken sight distance in metres, the length (L) of a summit curve, is
