Civil Engineering MCQs

Page No. 278

The method of design of flexible pavement as recommended by IRC is____________?


agroup index method


b CBR method


cWestergaard method


dBenkelman beam method


View Answer CBR method

Flexible pavement distribute the wheel load_____________?


adirectly to subgrade


b through structural action


cthrough a set of layers to the subgrade


d none of the above



Group index method of design of flexible pavement is_______________?


aa theoretical method


b an empirical method based on physical properties of subgrade soil


can empirical method based on strength characteristics of subgrade soil


da semi empirical method



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______________?


a0


b3


c5


d7


View Answer 0

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


cequal to 40°C


dnone of the above


View Answer greater than 40°C

Bitumen of grade 80/100 means______________?


aits penetration value is 8 mm


b its penetration value is 10 mm


cits penetration value is 8 to 10 mm


d its penetration value is 8 to 10 cm



Which of the following represents hardest grade of bitumen ?


a30/40


b60/70


c80/100


d100/120


View Answer 30/40

The ductility value of bitumen for suitability in road construction should not be less than____________?


a 30 cm


b40 cm


c50 cm


d60 cm


View Answer 50 cm

The maximum allowable Los Angeles abrasion value for high quality surface course is_______________?


a10%


b20 %


c 30%


d 45 %


View Answer 30%

In CBR test the value of CBR is calculated at_______________?


a 2.5 mm penetration only


b 5.0 mm penetration only


c7.5 mm penetration only


d both 2.5mm and 5.0 mm penetrations



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