11) Stopping sight distance on a national highway at a descending gradient of 2% is
a) 121 m
b) 132 m
c) 143 m
d) 154 m
12) For the purpose of designing flexible pavement IRC traffic is divided into ______ categories.
(a) 3
(b) 5
(c) 7
(d) 9
13) The design value of lateral friction coefficient on highway is
a) 1.5
b) 0.50
c) 0.35
d) 0.15
14) Soil to be used for earth road should have liquid limit less than
(a) 5 %
(b) 15 %
(c) 25 %
(d) 35 %
15) Road alignment is influenced by
a) traffic requirements
b) stability of hill slopes
c) number of cross drainage work
d) all of the above
16) Before placing concrete for road works, the sub-grade should be kept moist at least for
(a) 12 hours
(b) one day
(c) 3 days
(d) 5 days
17) The compensated gradient provided at the curve of radius 60 m with a ruling gradient of 6 percent is :
a) 5.26%
b) 4.75%
c) 4.5%
d) 3.75%
18) A basic requirement of intersection at grade is
(a) the relative angle of approach should be high
(b) it should clearly guide the driver
(c) the area of conflict should be small
(d) the relative speed should be high
20) The PCU (passenger car unit) value for car on an urban road is
a) 0.5
b) 1.0
c) 3.0
d) 4.0