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Theory of Structures

Q1: The radius of gyration of a rectangular section (depth D, width B) from a centroidal axis parallel to the width is

A

B

C

D

ANS:C -

R = sq.root(I/A) for rectangular section,

I = bd^3/12,

A = bd,

I/A = d/12 = d /4 * 3,

Sq.root (d/4 * 3) = 0.5 d/sq.root 3.



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