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Steel Structure Design - Engineering

Q1:

The effective length L of a simply supported beam with ends restrained against torsion, and also the ends of compression flange partially restrained against lateral bending, is given by

A L = span

B L = 0.85 span

C L = 0.75 span

D L = 0.7 span

E L = 1.25 span

ANS:B - L = 0.85 span

D is the Right answer.

L = 0.7 for simply supported,
L = 0.85 for the cantilever,
L = 2L for cantilever continuous.