Civil Engineering Transportations MCQ-4

 

Civil Engineering Transportations MCQ-4

92. The maximum limit of water absorption for aggregate suitable for road construction is
a) 0.4 %
b) 0.6%
c) 0.8 %
d) 1.0 %
Ans: b

93. Which of the following represents hardest grade of bitumen ?
a) 30/40
b) 60/70
c) 80/100
d) 100/120
Ans: a

94. Penetration test on bitumen is used for determining its
a) grade
b) viscosity
c) ductility
d) temperature susceptibility
Ans: a

95. Bitumen of grade 80/100 means
a) its penetration value is 8 mm
b) its penetration value is 10 mm
c) its penetration value is 8 to 10 mm
d) its penetration value is 8 to 10 cm
Ans: c

96. RC-2, MC-2 and SC-2 correspond to
a) same viscosity
b) viscosity  in  increasing  order from RC-2 to SC-2
c) viscosity in decreasing order from RC-2 to SC-2
d) none of the above
Ans: a

97. The recommended grade of tar for grouting purpose is
a) RT-1
b) RT-2
c) RT.3
d) RT-5
Ans: d

98. Softening point of bitumen to be used for read construction at a place where maximum temperature is 40° C should be
a) less-than 40°C
b) greater than 40°C
c) equal to 40°C
d) none of the above
 Ans: b

99. For rapid curing cutbacks, the oil used is
a) gasoline
b) kerosene oil
c) light diesel
d) heavy diesel
Ans: a

100. The method of design of flexible pavement as recommended by IRC is
a) group index method
b) CBR method
c) Westergaard method
d) Benkelman beam method
Ans: b

101. The group index for a soil, whose liquid limit is 40 percent, plasticity index is 10 percent and percentage passing 75 micron IS sieve is 35, is
a) 0
b) 3
c) 5
d) 7
Ans: a

102. Bottom most layer of pavement is known as
a) wearing course
b) base course
c) sub-base course
d) subgrade
Ans: d

103. Flexible pavement distribute the wheel load
a) directly to subgrade
b) through structural action
c) through a set of layers to the subgrade
d) none of the above
Ans: c

104. The number of repetitions, which the pavement thickness designed for a given wheel load should be able to support during the life of pavement is
a) 1000
b) 10000
c) 100000
d) 1000000
Ans: d

105. Group index method of design of flexible pavement is
a) a theoretical method
b) an empirical method based on physical properties of subgrade soil
c) an empirical method based on strength characteristics of subgrade soil
d) a semi empirical method
Ans: b

106. Select the correct statement.
a) More the value of group index, less thickness of pavement will be required.
b) More the value of CBR, greater thick-ness of pavement will be required.
c) Minimum and maximum values of group index can be 0 and 20 respec-tively.
d) all of the above
Ans: c

107. If the group index value of subgrade is between 5 and 9, then the subgrade is treated as
a) good
b) fair
c) poor
d) very poor
Ans: c

108. Tyre pressure influences the
a) total depth of pavement
b) quality of surface course
c) both the above
d) none of the above
Ans: b

109. Rigidity factor for a tyre pressure greater than 7 kg/cm2 is
a) equal to 1
b) less than 1
c) greater than 1
d) zero
Ans: b


115. The critical combination of stresses for corner region in cement concrete roads is
a) load stress + warping stress frictional stress
b) load stress + warping stress + frictional stress
c) load stress + warping stress
d) load stress + frictional stress
Ans: c

116. Tie bars in cement concrete pavements are at
a) expansion joints
b) contraction joints
c) warping joints
d) longitudinal joints
Ans: d

117. The maximum spacing of contraction joints in rigid pavements is
a) 2.5 m
b) 3.5 m
c) 4.5 m
d) 5.5m
Ans: c

118. The maximum thickness of expansion joint in rigid pavements is
a) 0
b) 25 mm
c) 50 mm
d) 100 mm
Ans: b

119. The function of an expansion joint in rigid pavements is to
a) relieve warping stresses
b) relieve shrinkage stresses
c) resist stresses due to expansion
d) allow free expansion
Ans: d

121. The fundamental factor in the selection of pavement type is
a) climatic condition
b) type and intensity of traffic
c) subgrade soil and drainage conditions
d) availability of funds for the construction project
Ans: b

122. Most suitable material for highway embankments is
a) granular soil
b) organic soil
c) silts
d) clays
Ans: a

123. Maximum daily traffic capacity of bituminous pavements is
a) 500 tonnes per day
b) 1000 tonnes per day
c) 1500 tonnes per day
d) 2000 tonnes per day
Ans: c

124. The most suitable equipment for compacting clayey soils is a
a) smooth wheeled roller
b) pneumatic tyred roller
c) sheep foot roller
d) vibrator
Ans: c

125. The aggregates required for one kilometre length of water bound macadam road per meter width and for 10 mm thickness is
a) 8 cubic meter
b) 10 cubic meter
c) 12 cubic meter
d) 15 cubic meter
Ans: c

126. The camber of shoulders in water bound macadam roads is
a) equal to the cross slope of pavement
b) less than the cross slope of pavement
c) greater than the cross slope of pavement
d) zero
Ans: a

127. The binder normally used in flexible pavement construction is
a) cement
b) lime
c) bitumen
d) none of the above
Ans: c

128. In highway construction, rolling starts from
a) sides and proceed to center
b) center and proceed to sides
c) one side and proceed to other side
d) any of the above
Ans: a

129. For the construction of water bound macadam roads, the correct sequence of operations after spreading coarse aggregates is
a) dry rolling, wet rolling, application of screening and application of filler
b) dry rolling, application of filler, wet rolling and application of screening
c) dry rolling, application of screening, wet rolling and application of filler
d) dry rolling, application of screening, application of filler and wet rolling
Ans: c

130. In the penetration macadam construction, the bitumen is
a) sprayed after the aggregates are spread and compacted
b) premixed with aggregates and then spread
c) sprayed before  the  aggregates  are spread and compacted
d) none of the above
Ans: a

131. When the bituminous surfacing is done on already existing black top road or over existing cement concrete road, the type of treatment to be given is
a) seal coat
b) tack coat
c) prime coat
d) spray of emulsion
Ans: b

132. Which of the following premix methods is used for base course ?
a) bituminous carpet
b) mastic asphalt
c) sheet asphalt
d) bituminous bound macadam
 Ans: d

133. Select the correct statement.
a) Quantity of binder required for tack coat is less than that required for prime coat.
b) Prime coat treatment is given for plugging the voids in water bound macadam during bituminous road construction.
c) Seal coat is the final coat over certain previous bituminous pavements.
d) A bitumen primer is a high viscosity cutback.
Ans: d

134. The suitable surfacing material for a bridge deck slab is
a) sheet asphalt
b) bituminous carpet
c) mastic asphalt
d) rolled asphalt
Ans: c

135. Which of the following is considered to be the highest quality construction in the group of black top pavements ?
a) mastic asphalt
b) sheet asphalt
c) bituminous carpet
d) bituminous concrete
Ans: d

136. The thickness of bituminous carpet varies from
a) 20 to 25 mm
b) 50 to 75 mm
c) 75 to 100 mm
d) 100 to 120 mm
Ans: a

137. Which of the following represents a carpet of sand-bitumen mix without coarse aggregates ?
a) mastic asphalt
b) sheet asphalt
c) bituminous carpet
d) bituminous concrete
Ans: b

138. In highway construction on superelevated curves, the rolling shall proceed from
a) sides towards the centre
b) centre towards the sides
c) lower edge towards the upper edge
d) upper edge towards the lower edge
Ans: c

144. The camber for hill roads in case of bituminous surfacing is adopted as
a) 2%
b) 2.5%
c) 3%
d) 4%
Ans: b

146.   The minimum design speed for hairpin bends in hill roads is taken as
a) 20 kmph
b) 30 kmph
c) 40 kmph
d) 50 kmph
Ans: a

147.    The drain which is provided parallel to roadway to intercept and divert the water from hill slopes is known as
a) sloping drain
b) catchwater drain
c) side drain
d) cross drain
Ans: b

148.    The walls which are necessary on the hill side of roadway where earth has to be retained from slipping is known as
a) retaining wall
b) breast wall
c) parapet wall
d) none of the above
Ans: b

149.    In hill roads the side drains arc provided
a) only on the hill side of road
b) only on the opposite side of hill
c) on both sides of road
d) none of the above
Ans: a