The radii of relative stiffness of the rigid pavement P and Q are denoted by IP and IQ respectively. The geometric and material properties of the concrete slab and underlying soil are given below. Pavement Concrete Soil Length of Slab Breadth of Slab Thickness of Slab Modulus of Elasticity Poisson’s Ratio Subgrade Reaction Modulus P L B h E μ K Q L B 0.5 h E μ 2K The ratio (up to one decimal place) of I P / I Q is _____.

GATE Civil Engineering (CE) 2017 Shift 2 Solved Paper

Question : 64 of 65

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The radii of relative stiffness of the rigid pavement P and Q are denoted by IP and IQ respectively. The geometric and material properties of the concrete slab and underlying soil are given below.

Pavement	Concrete					Soil
Pavement	Length of Slab	Breadth of Slab	Thickness of Slab	Modulus of Elasticity	Poisson’s Ratio	Subgrade Reaction Modulus
P	L	B	h	E	μ	K
Q	L	B	0.5 h	E	μ	2K

The ratio (up to one decimal place) of I_P / I_Q is _____.

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