In the design chart for finding corner stress by IRC, what parameter below is not constant?

In the design chart for finding corner stress by IRC, what parameter

1.	In the design chart for finding corner stress by IRC, what parameter below is not constant?
A.	Poisson’s ratio
B.	Modulus of subgrade reaction
C.	Modulus of elasticity
D.	Wheel load
Answer» C. Modulus of elasticity

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In the design chart for finding corner stress by IRC, what parameter below is not constant?

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