Design the thickness of a rigid pavement slab for a two-way, two-lane National highway in the state of West Bengal. The total two-way traffic is 2500 CVPD at the end of the construction period. The flexural strength of concrete is 45 kg/cm2, modulus of subgrade reaction is 8 kg/cm3, tyre pressure is 8 kg/cm2, the rate of traffic increase is taken as 7.5 %, the spacing of contraction joints is 4.5 m and the width of the slab is 3.5 m. Assume any other data required. The axle load spectrum obtained from a survey is given below:

Design the thickness of a rigid pavement slab for a two-way, two-lane

1.	Design the thickness of a rigid pavement slab for a two-way, two-lane National highway in the state of West Bengal. The total two-way traffic is 2500 CVPD at the end of the construction period. The flexural strength of concrete is 45 kg/cm2, modulus of subgrade reaction is 8 kg/cm3, tyre pressure is 8 kg/cm2, the rate of traffic increase is taken as 7.5 %, the spacing of contraction joints is 4.5 m and the width of the slab is 3.5 m. Assume any other data required. The axle load spectrum obtained from a survey is given below:
A.	38 cm
B.	36 cm
C.	32 cm
D.	35 cmView Answer
Answer» D. 35 cmView Answer