Under the design of rigid pavement, find the value of radius of relative stiffness of 15 cm thick cement concrete slab from the following data.
1. Modulus of elasticity of cement concrete (E) = 250000 kg/cm2
2. Poisson’s ratio for concrete = 0.13
3. Modulus of subgrade reaction (K) = 0.3 kg/cm3
1
60 cm
2
50 cm
3
124.26 cm
4
65 cm