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Theory of Structures - Engineering

Q1:

For beams of uniform strength, if depth is constant,

A width b ∝ M

B
width b ∝ M

C
width b ∝ 3 M

D
width b ∝

ANS:A - width b ∝ M

Moment is directly proportional to Moment of inertia.

ie. M d.p to I.
ie. M dp to bd^3/12.
if depth is constant, M is directly proportional (dp) to breadth.