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Highway Engineering - Interview Questions and Answers

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101. When a number of roads are meeting at a point and only one of the roads is important, then the suitable shape of rotary is
A. circular
B. tangent
C. elliptical
D. turbine
Explanation:
102. When two equally important roads cross roughly at right angles, the suitable shape of central island is
A. circular
B. elliptical
C. tangent
D. turbine
Explanation:
103. 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
Explanation:
104. 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
Explanation:
105. Which of the following represents hardest grade of bitumen ?
A. 30/40
B. 60/70
C. 80/100
D. 100/120
Explanation: