Theory of Structures

The ratio of maximum and average shear stresses on a rectangular section, is

A 1

B 1.25

C 1.5

D 2.0

E 2.5

ANS:C - 1.5

Calculate the plastic Modulus as = (B.D^2)/4.
Calculate elastic Modulus as = (B.D^2)/6 .
The ratio of Plastic Modulus to Elastic Modulus = 1.5.

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